./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f2570563cfcd810b6ed16bb44bfedbab29cf846e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f2570563cfcd810b6ed16bb44bfedbab29cf846e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:29:24,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:29:24,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:29:24,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:29:24,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:29:24,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:29:24,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:29:24,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:29:24,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:29:24,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:29:24,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:29:24,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:29:24,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:29:24,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:29:24,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:29:24,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:29:24,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:29:24,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:29:24,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:29:24,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:29:24,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:29:24,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:29:24,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:29:24,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:29:24,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:29:24,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:29:24,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:29:24,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:29:24,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:29:24,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:29:24,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:29:24,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:29:24,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:29:24,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:29:24,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:29:24,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:29:24,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:29:24,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:29:24,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:29:24,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:29:24,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:29:24,324 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:29:24,389 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:29:24,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:29:24,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:29:24,391 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:29:24,392 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:29:24,392 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:29:24,392 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:29:24,392 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:29:24,393 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:29:24,393 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:29:24,394 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:29:24,395 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:29:24,395 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:29:24,395 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:29:24,396 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:29:24,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:29:24,397 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:29:24,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:29:24,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:29:24,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:29:24,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:29:24,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:29:24,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:29:24,399 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:29:24,399 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:29:24,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:29:24,400 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:29:24,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:29:24,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:29:24,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:29:24,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:29:24,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:29:24,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:29:24,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:29:24,402 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:29:24,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:29:24,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:29:24,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:29:24,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:29:24,404 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_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2570563cfcd810b6ed16bb44bfedbab29cf846e [2021-10-16 02:29:24,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:29:24,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:29:24,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:29:24,845 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:29:24,846 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:29:24,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i [2021-10-16 02:29:24,944 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/data/6a6f39a95/ddb0f24a6c414b54924ef5aa3dbaee53/FLAG9ebe9ad8e [2021-10-16 02:29:25,605 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:29:25,608 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i [2021-10-16 02:29:25,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/data/6a6f39a95/ddb0f24a6c414b54924ef5aa3dbaee53/FLAG9ebe9ad8e [2021-10-16 02:29:25,960 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/data/6a6f39a95/ddb0f24a6c414b54924ef5aa3dbaee53 [2021-10-16 02:29:25,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:29:25,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:29:25,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:29:25,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:29:25,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:29:25,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:29:25" (1/1) ... [2021-10-16 02:29:25,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4803fccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:25, skipping insertion in model container [2021-10-16 02:29:25,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:29:25" (1/1) ... [2021-10-16 02:29:25,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:29:25,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:29:26,201 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_2460bb25-4b90-40fb-b16b-44f02dc19244/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i[951,964] [2021-10-16 02:29:26,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:29:26,226 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:29:26,240 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_2460bb25-4b90-40fb-b16b-44f02dc19244/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i[951,964] [2021-10-16 02:29:26,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:29:26,262 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:29:26,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:26 WrapperNode [2021-10-16 02:29:26,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:29:26,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:29:26,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:29:26,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:29:26,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:26" (1/1) ... [2021-10-16 02:29:26,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:26" (1/1) ... [2021-10-16 02:29:26,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:29:26,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:29:26,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:29:26,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:29:26,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:26" (1/1) ... [2021-10-16 02:29:26,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:26" (1/1) ... [2021-10-16 02:29:26,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:26" (1/1) ... [2021-10-16 02:29:26,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:26" (1/1) ... [2021-10-16 02:29:26,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:26" (1/1) ... [2021-10-16 02:29:26,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:26" (1/1) ... [2021-10-16 02:29:26,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:26" (1/1) ... [2021-10-16 02:29:26,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:29:26,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:29:26,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:29:26,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:29:26,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:26" (1/1) ... [2021-10-16 02:29:26,345 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:29:26,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:29:26,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:29:26,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:29:26,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:29:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:29:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:29:26,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:29:28,780 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:29:28,780 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-16 02:29:28,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:29:28 BoogieIcfgContainer [2021-10-16 02:29:28,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:29:28,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:29:28,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:29:28,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:29:28,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:29:25" (1/3) ... [2021-10-16 02:29:28,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b0af20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:29:28, skipping insertion in model container [2021-10-16 02:29:28,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:26" (2/3) ... [2021-10-16 02:29:28,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b0af20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:29:28, skipping insertion in model container [2021-10-16 02:29:28,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:29:28" (3/3) ... [2021-10-16 02:29:28,795 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound5.i [2021-10-16 02:29:28,801 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:29:28,801 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 02:29:28,848 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:29:28,854 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:29:28,854 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 02:29:28,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:28,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:29:28,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:28,885 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:29:28,886 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:29:28,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:29:28,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1384273294, now seen corresponding path program 1 times [2021-10-16 02:29:28,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:29:28,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020845363] [2021-10-16 02:29:28,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:28,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:29:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:29,079 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:29:29,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020845363] [2021-10-16 02:29:29,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020845363] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:29:29,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:29:29,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:29:29,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792319617] [2021-10-16 02:29:29,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:29:29,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:29:29,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:29:29,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:29:29,106 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:29,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:29:29,122 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2021-10-16 02:29:29,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:29:29,124 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 02:29:29,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:29:29,133 INFO L225 Difference]: With dead ends: 28 [2021-10-16 02:29:29,133 INFO L226 Difference]: Without dead ends: 14 [2021-10-16 02:29:29,136 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:29:29,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-16 02:29:29,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-16 02:29:29,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:29,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-10-16 02:29:29,169 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 6 [2021-10-16 02:29:29,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:29:29,169 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-10-16 02:29:29,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:29,170 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-10-16 02:29:29,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:29:29,170 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:29,170 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:29:29,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:29:29,171 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:29:29,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:29:29,172 INFO L82 PathProgramCache]: Analyzing trace with hash -346058289, now seen corresponding path program 1 times [2021-10-16 02:29:29,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:29:29,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803748108] [2021-10-16 02:29:29,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:29,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:29:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:29,238 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:29:29,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803748108] [2021-10-16 02:29:29,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803748108] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:29:29,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:29:29,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:29:29,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078094689] [2021-10-16 02:29:29,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:29:29,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:29:29,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:29:29,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:29:29,243 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:29,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:29:29,268 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2021-10-16 02:29:29,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:29:29,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 02:29:29,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:29:29,270 INFO L225 Difference]: With dead ends: 26 [2021-10-16 02:29:29,270 INFO L226 Difference]: Without dead ends: 16 [2021-10-16 02:29:29,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:29:29,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-16 02:29:29,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-16 02:29:29,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:29,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-10-16 02:29:29,275 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 7 [2021-10-16 02:29:29,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:29:29,276 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-10-16 02:29:29,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:29,276 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-10-16 02:29:29,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:29:29,277 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:29,277 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:29:29,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:29:29,278 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:29:29,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:29:29,279 INFO L82 PathProgramCache]: Analyzing trace with hash -2089077620, now seen corresponding path program 1 times [2021-10-16 02:29:29,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:29:29,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409313314] [2021-10-16 02:29:29,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:29,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:29:29,297 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:29:29,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151212433] [2021-10-16 02:29:29,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:29,298 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:29:29,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:29:29,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:29:29,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:29:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:29,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:29:29,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:29,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:29,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:29,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:29,953 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:29:29,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409313314] [2021-10-16 02:29:29,954 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:29:29,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151212433] [2021-10-16 02:29:29,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151212433] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:29:29,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:29:29,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:29:29,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290338239] [2021-10-16 02:29:29,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:29:29,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:29:29,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:29:29,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:29:29,957 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:32,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:29:32,343 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2021-10-16 02:29:32,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:29:32,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 02:29:32,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:29:32,346 INFO L225 Difference]: With dead ends: 38 [2021-10-16 02:29:32,347 INFO L226 Difference]: Without dead ends: 28 [2021-10-16 02:29:32,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 132.1ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:29:32,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-16 02:29:32,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2021-10-16 02:29:32,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 23 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) [2021-10-16 02:29:32,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2021-10-16 02:29:32,353 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 8 [2021-10-16 02:29:32,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:29:32,354 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2021-10-16 02:29:32,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:32,354 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2021-10-16 02:29:32,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 02:29:32,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:32,355 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:29:32,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:29:32,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:29:32,584 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:29:32,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:29:32,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1026504725, now seen corresponding path program 1 times [2021-10-16 02:29:32,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:29:32,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740864363] [2021-10-16 02:29:32,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:32,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:29:32,599 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:29:32,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706928312] [2021-10-16 02:29:32,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:32,600 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:29:32,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:29:32,610 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:29:32,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 02:29:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:32,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:29:32,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:32,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:32,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:32,869 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:29:32,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740864363] [2021-10-16 02:29:32,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:29:32,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706928312] [2021-10-16 02:29:32,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706928312] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:29:32,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:29:32,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:29:32,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133794475] [2021-10-16 02:29:32,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:29:32,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:29:32,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:29:32,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:29:32,872 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:35,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:29:35,007 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2021-10-16 02:29:35,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:29:35,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-16 02:29:35,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:29:35,010 INFO L225 Difference]: With dead ends: 42 [2021-10-16 02:29:35,010 INFO L226 Difference]: Without dead ends: 28 [2021-10-16 02:29:35,010 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:29:35,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-16 02:29:35,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2021-10-16 02:29:35,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:35,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2021-10-16 02:29:35,016 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 12 [2021-10-16 02:29:35,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:29:35,016 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2021-10-16 02:29:35,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:35,017 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2021-10-16 02:29:35,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 02:29:35,018 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:35,018 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-16 02:29:35,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:29:35,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-10-16 02:29:35,240 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:29:35,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:29:35,240 INFO L82 PathProgramCache]: Analyzing trace with hash -10010993, now seen corresponding path program 1 times [2021-10-16 02:29:35,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:29:35,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810699899] [2021-10-16 02:29:35,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:35,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:29:35,256 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:29:35,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1240510505] [2021-10-16 02:29:35,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:35,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:29:35,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:29:35,258 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:29:35,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 02:29:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:35,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:29:35,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:35,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:35,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:35,537 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:29:35,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810699899] [2021-10-16 02:29:35,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:29:35,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240510505] [2021-10-16 02:29:35,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240510505] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:29:35,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [822584774] [2021-10-16 02:29:35,573 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-16 02:29:35,573 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:29:35,579 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:29:35,592 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:29:35,595 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:29:35,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:29:35,656 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:29:35,657 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:29:35,658 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:29:35,664 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:29:35,665 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:29:35,666 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:29:35,674 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-10-16 02:29:35,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:29:35,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:29:35,745 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-16 02:29:35,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 26 [2021-10-16 02:29:35,747 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:29:35,750 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 02:29:35,751 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:29:35,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 02:29:35,752 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:29:35,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:29:35,793 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:29:35,795 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:29:35,797 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-16 02:29:35,798 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:29:35,798 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:101, output treesize:89 [2021-10-16 02:29:35,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-16 02:29:36,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:29:36,024 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_8| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:29:36,027 INFO L168 Benchmark]: Toolchain (without parser) took 10062.09 ms. Allocated memory is still 127.9 MB. Free memory was 91.6 MB in the beginning and 62.3 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:29:36,027 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 86.0 MB. Free memory was 57.3 MB in the beginning and 57.3 MB in the end (delta: 30.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:29:36,028 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.58 ms. Allocated memory is still 127.9 MB. Free memory was 91.3 MB in the beginning and 103.5 MB in the end (delta: -12.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:29:36,028 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.82 ms. Allocated memory is still 127.9 MB. Free memory was 103.5 MB in the beginning and 101.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:29:36,029 INFO L168 Benchmark]: Boogie Preprocessor took 23.89 ms. Allocated memory is still 127.9 MB. Free memory was 101.8 MB in the beginning and 100.9 MB in the end (delta: 904.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:29:36,029 INFO L168 Benchmark]: RCFGBuilder took 2448.07 ms. Allocated memory is still 127.9 MB. Free memory was 100.9 MB in the beginning and 88.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:29:36,030 INFO L168 Benchmark]: TraceAbstraction took 7241.44 ms. Allocated memory is still 127.9 MB. Free memory was 87.7 MB in the beginning and 62.3 MB in the end (delta: 25.4 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:29:36,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 86.0 MB. Free memory was 57.3 MB in the beginning and 57.3 MB in the end (delta: 30.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 296.58 ms. Allocated memory is still 127.9 MB. Free memory was 91.3 MB in the beginning and 103.5 MB in the end (delta: -12.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.82 ms. Allocated memory is still 127.9 MB. Free memory was 103.5 MB in the beginning and 101.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.89 ms. Allocated memory is still 127.9 MB. Free memory was 101.8 MB in the beginning and 100.9 MB in the end (delta: 904.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2448.07 ms. Allocated memory is still 127.9 MB. Free memory was 100.9 MB in the beginning and 88.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7241.44 ms. Allocated memory is still 127.9 MB. Free memory was 87.7 MB in the beginning and 62.3 MB in the end (delta: 25.4 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_8| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_8|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:29:36,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:29:38,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:29:38,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:29:38,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:29:38,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:29:38,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:29:38,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:29:38,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:29:38,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:29:38,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:29:38,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:29:38,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:29:38,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:29:38,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:29:38,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:29:38,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:29:38,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:29:38,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:29:38,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:29:38,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:29:38,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:29:38,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:29:38,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:29:38,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:29:38,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:29:38,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:29:38,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:29:38,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:29:38,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:29:38,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:29:38,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:29:38,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:29:38,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:29:38,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:29:38,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:29:38,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:29:38,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:29:38,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:29:38,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:29:38,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:29:38,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:29:38,778 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:29:38,821 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:29:38,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:29:38,823 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:29:38,823 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:29:38,824 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:29:38,824 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:29:38,824 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:29:38,825 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:29:38,825 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:29:38,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:29:38,828 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:29:38,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:29:38,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:29:38,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:29:38,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:29:38,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:29:38,830 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:29:38,831 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:29:38,831 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:29:38,831 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:29:38,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:29:38,832 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:29:38,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:29:38,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:29:38,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:29:38,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:29:38,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:29:38,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:29:38,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:29:38,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:29:38,835 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:29:38,835 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:29:38,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:29:38,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:29:38,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:29:38,837 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_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2570563cfcd810b6ed16bb44bfedbab29cf846e [2021-10-16 02:29:39,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:29:39,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:29:39,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:29:39,283 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:29:39,284 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:29:39,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i [2021-10-16 02:29:39,379 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/data/25805dc8e/e48c91414668475792ef23eca1bdc878/FLAG7ae13cca1 [2021-10-16 02:29:40,005 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:29:40,005 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i [2021-10-16 02:29:40,013 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/data/25805dc8e/e48c91414668475792ef23eca1bdc878/FLAG7ae13cca1 [2021-10-16 02:29:40,385 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/data/25805dc8e/e48c91414668475792ef23eca1bdc878 [2021-10-16 02:29:40,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:29:40,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:29:40,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:29:40,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:29:40,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:29:40,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:29:40" (1/1) ... [2021-10-16 02:29:40,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a56d83c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:40, skipping insertion in model container [2021-10-16 02:29:40,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:29:40" (1/1) ... [2021-10-16 02:29:40,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:29:40,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:29:40,630 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_2460bb25-4b90-40fb-b16b-44f02dc19244/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i[951,964] [2021-10-16 02:29:40,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:29:40,662 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:29:40,684 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_2460bb25-4b90-40fb-b16b-44f02dc19244/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i[951,964] [2021-10-16 02:29:40,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:29:40,711 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:29:40,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:40 WrapperNode [2021-10-16 02:29:40,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:29:40,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:29:40,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:29:40,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:29:40,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:40" (1/1) ... [2021-10-16 02:29:40,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:40" (1/1) ... [2021-10-16 02:29:40,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:29:40,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:29:40,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:29:40,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:29:40,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:40" (1/1) ... [2021-10-16 02:29:40,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:40" (1/1) ... [2021-10-16 02:29:40,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:40" (1/1) ... [2021-10-16 02:29:40,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:40" (1/1) ... [2021-10-16 02:29:40,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:40" (1/1) ... [2021-10-16 02:29:40,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:40" (1/1) ... [2021-10-16 02:29:40,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:40" (1/1) ... [2021-10-16 02:29:40,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:29:40,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:29:40,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:29:40,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:29:40,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:40" (1/1) ... [2021-10-16 02:29:40,827 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:29:40,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:29:40,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:29:40,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:29:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:29:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:29:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:29:40,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:29:41,203 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:29:41,203 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-16 02:29:41,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:29:41 BoogieIcfgContainer [2021-10-16 02:29:41,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:29:41,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:29:41,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:29:41,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:29:41,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:29:40" (1/3) ... [2021-10-16 02:29:41,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e04eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:29:41, skipping insertion in model container [2021-10-16 02:29:41,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:40" (2/3) ... [2021-10-16 02:29:41,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e04eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:29:41, skipping insertion in model container [2021-10-16 02:29:41,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:29:41" (3/3) ... [2021-10-16 02:29:41,212 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound5.i [2021-10-16 02:29:41,217 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:29:41,218 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 02:29:41,266 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:29:41,273 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:29:41,273 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 02:29:41,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:41,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:29:41,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:41,294 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:29:41,295 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:29:41,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:29:41,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1819218388, now seen corresponding path program 1 times [2021-10-16 02:29:41,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:29:41,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287884802] [2021-10-16 02:29:41,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:41,315 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:29:41,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:29:41,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:29:41,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:29:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:41,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:29:41,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:41,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:41,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:41,486 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:29:41,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287884802] [2021-10-16 02:29:41,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287884802] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:29:41,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:29:41,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:29:41,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64218574] [2021-10-16 02:29:41,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:29:41,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:29:41,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:29:41,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:29:41,512 INFO L87 Difference]: Start difference. First operand has 20 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:41,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:29:41,529 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2021-10-16 02:29:41,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:29:41,531 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 02:29:41,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:29:41,543 INFO L225 Difference]: With dead ends: 35 [2021-10-16 02:29:41,543 INFO L226 Difference]: Without dead ends: 16 [2021-10-16 02:29:41,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:29:41,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-16 02:29:41,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-16 02:29:41,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:41,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-10-16 02:29:41,585 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 7 [2021-10-16 02:29:41,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:29:41,586 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-10-16 02:29:41,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:41,587 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-10-16 02:29:41,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:29:41,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:41,588 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:29:41,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:29:41,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:29:41,802 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:29:41,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:29:41,804 INFO L82 PathProgramCache]: Analyzing trace with hash 177936045, now seen corresponding path program 1 times [2021-10-16 02:29:41,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:29:41,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192588782] [2021-10-16 02:29:41,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:41,806 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:29:41,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:29:41,807 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:29:41,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:29:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:41,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:29:41,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:41,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:41,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:42,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:42,037 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:29:42,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192588782] [2021-10-16 02:29:42,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192588782] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:29:42,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:29:42,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-16 02:29:42,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981881504] [2021-10-16 02:29:42,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:29:42,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:29:42,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:29:42,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:29:42,052 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:42,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:29:42,125 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2021-10-16 02:29:42,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:29:42,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 02:29:42,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:29:42,128 INFO L225 Difference]: With dead ends: 33 [2021-10-16 02:29:42,128 INFO L226 Difference]: Without dead ends: 22 [2021-10-16 02:29:42,129 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:29:42,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-16 02:29:42,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-10-16 02:29:42,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:42,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2021-10-16 02:29:42,140 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 8 [2021-10-16 02:29:42,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:29:42,142 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2021-10-16 02:29:42,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:42,143 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2021-10-16 02:29:42,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:29:42,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:42,145 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:29:42,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:29:42,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:29:42,356 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:29:42,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:29:42,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1269844846, now seen corresponding path program 1 times [2021-10-16 02:29:42,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:29:42,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874078652] [2021-10-16 02:29:42,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:42,359 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:29:42,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:29:42,364 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:29:42,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:29:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:42,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:29:42,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:42,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:42,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:43,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:43,556 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:29:43,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874078652] [2021-10-16 02:29:43,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874078652] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:29:43,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:29:43,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-16 02:29:43,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107463972] [2021-10-16 02:29:43,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:29:43,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:29:43,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:29:43,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:29:43,560 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2021-10-16 02:29:46,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:29:46,336 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2021-10-16 02:29:46,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:29:46,352 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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 9 [2021-10-16 02:29:46,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:29:46,353 INFO L225 Difference]: With dead ends: 50 [2021-10-16 02:29:46,353 INFO L226 Difference]: Without dead ends: 40 [2021-10-16 02:29:46,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 634.3ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:29:46,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-16 02:29:46,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2021-10-16 02:29:46,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:46,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2021-10-16 02:29:46,365 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 9 [2021-10-16 02:29:46,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:29:46,365 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-10-16 02:29:46,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2021-10-16 02:29:46,366 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2021-10-16 02:29:46,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 02:29:46,371 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:46,371 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:29:46,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:29:46,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:29:46,572 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:29:46,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:29:46,573 INFO L82 PathProgramCache]: Analyzing trace with hash 479667437, now seen corresponding path program 1 times [2021-10-16 02:29:46,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:29:46,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087464185] [2021-10-16 02:29:46,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:46,575 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:29:46,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:29:46,576 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:29:46,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:29:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:46,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:29:46,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:46,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:46,944 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:29:46,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087464185] [2021-10-16 02:29:46,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087464185] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:29:46,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1324404563] [2021-10-16 02:29:46,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:46,946 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:29:46,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:29:46,948 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:29:46,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-16 02:29:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:47,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:29:47,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:47,185 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:47,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:47,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:47,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1324404563] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:29:47,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413469223] [2021-10-16 02:29:47,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:47,261 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:29:47,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:29:47,268 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:29:47,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-16 02:29:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:47,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:29:47,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:47,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:47,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:47,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413469223] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:29:47,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:29:47,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-10-16 02:29:47,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988817875] [2021-10-16 02:29:47,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:29:47,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:29:47,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:29:47,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:29:47,532 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:47,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:29:47,731 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2021-10-16 02:29:47,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 02:29:47,732 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-16 02:29:47,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:29:47,734 INFO L225 Difference]: With dead ends: 73 [2021-10-16 02:29:47,734 INFO L226 Difference]: Without dead ends: 62 [2021-10-16 02:29:47,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 184.2ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:29:47,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-16 02:29:47,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 39. [2021-10-16 02:29:47,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 38 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2021-10-16 02:29:47,754 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 14 [2021-10-16 02:29:47,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:29:47,754 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-10-16 02:29:47,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:47,756 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2021-10-16 02:29:47,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 02:29:47,763 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:47,763 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:29:47,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:29:47,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:29:48,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-10-16 02:29:48,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:29:48,382 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:29:48,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:29:48,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1437397571, now seen corresponding path program 1 times [2021-10-16 02:29:48,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:29:48,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188698323] [2021-10-16 02:29:48,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:48,384 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:29:48,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:29:48,385 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:29:48,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:29:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:48,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:29:48,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:48,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:48,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:48,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:48,641 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:29:48,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188698323] [2021-10-16 02:29:48,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188698323] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:29:48,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:29:48,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:29:48,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370201891] [2021-10-16 02:29:48,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:29:48,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:29:48,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:29:48,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:29:48,644 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:48,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:29:48,710 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2021-10-16 02:29:48,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:29:48,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-16 02:29:48,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:29:48,713 INFO L225 Difference]: With dead ends: 58 [2021-10-16 02:29:48,713 INFO L226 Difference]: Without dead ends: 38 [2021-10-16 02:29:48,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:29:48,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-16 02:29:48,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2021-10-16 02:29:48,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.28125) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:48,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2021-10-16 02:29:48,720 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 14 [2021-10-16 02:29:48,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:29:48,721 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2021-10-16 02:29:48,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:48,721 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2021-10-16 02:29:48,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:29:48,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:48,723 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:29:48,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:29:48,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:29:48,936 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:29:48,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:29:48,937 INFO L82 PathProgramCache]: Analyzing trace with hash 2033583406, now seen corresponding path program 1 times [2021-10-16 02:29:48,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:29:48,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580270852] [2021-10-16 02:29:48,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:48,937 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:29:48,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:29:48,938 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:29:48,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:29:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:49,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:29:49,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:49,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:49,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:51,347 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:51,348 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:29:51,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580270852] [2021-10-16 02:29:51,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580270852] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:29:51,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1093648567] [2021-10-16 02:29:51,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:51,349 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:29:51,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:29:51,364 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:29:51,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-16 02:29:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:51,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:29:51,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:51,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:51,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:52,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1093648567] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:29:52,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908332546] [2021-10-16 02:29:52,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:52,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:29:52,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:29:52,861 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:29:52,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-16 02:29:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:53,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:29:53,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:53,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:54,172 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:54,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908332546] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:29:54,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:29:54,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6, 6, 7, 7] total 15 [2021-10-16 02:29:54,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071391029] [2021-10-16 02:29:54,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-16 02:29:54,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:29:54,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-16 02:29:54,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:29:54,174 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:59,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:29:59,958 INFO L93 Difference]: Finished difference Result 92 states and 120 transitions. [2021-10-16 02:29:59,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-16 02:29:59,961 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 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 15 [2021-10-16 02:29:59,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:29:59,961 INFO L225 Difference]: With dead ends: 92 [2021-10-16 02:29:59,962 INFO L226 Difference]: Without dead ends: 76 [2021-10-16 02:29:59,962 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 3377.3ms TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2021-10-16 02:29:59,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-16 02:29:59,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 39. [2021-10-16 02:29:59,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 38 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:59,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2021-10-16 02:29:59,970 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 15 [2021-10-16 02:29:59,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:29:59,970 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2021-10-16 02:29:59,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:59,971 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2021-10-16 02:29:59,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:29:59,972 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:59,972 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:00,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:00,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-10-16 02:30:00,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:00,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:30:00,588 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:00,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:00,589 INFO L82 PathProgramCache]: Analyzing trace with hash -755771670, now seen corresponding path program 1 times [2021-10-16 02:30:00,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:30:00,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171586017] [2021-10-16 02:30:00,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:00,589 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:30:00,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:30:00,591 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:30:00,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:30:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:00,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:30:00,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:00,910 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:00,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:01,039 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:30:01,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171586017] [2021-10-16 02:30:01,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171586017] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:30:01,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1043954579] [2021-10-16 02:30:01,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:01,040 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:30:01,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:30:01,045 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:30:01,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-10-16 02:30:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:01,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:30:01,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:01,415 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:01,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:01,505 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:01,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1043954579] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:30:01,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280413609] [2021-10-16 02:30:01,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:01,506 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:30:01,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:30:01,509 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:30:01,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-16 02:30:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:01,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:30:01,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:01,866 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:01,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:01,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280413609] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:30:01,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:30:01,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4, 5, 4, 5] total 7 [2021-10-16 02:30:01,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211276279] [2021-10-16 02:30:01,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:30:01,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:30:01,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:30:01,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:30:01,951 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:02,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:02,094 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2021-10-16 02:30:02,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:30:02,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-16 02:30:02,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:02,097 INFO L225 Difference]: With dead ends: 76 [2021-10-16 02:30:02,097 INFO L226 Difference]: Without dead ends: 43 [2021-10-16 02:30:02,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 54.9ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:30:02,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-16 02:30:02,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2021-10-16 02:30:02,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:02,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2021-10-16 02:30:02,104 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 22 [2021-10-16 02:30:02,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:02,104 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2021-10-16 02:30:02,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:02,104 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2021-10-16 02:30:02,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 02:30:02,105 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:02,105 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:02,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:02,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:02,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:02,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:30:02,706 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:02,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:02,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1791688368, now seen corresponding path program 2 times [2021-10-16 02:30:02,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:30:02,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255067757] [2021-10-16 02:30:02,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:30:02,707 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:30:02,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:30:02,709 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:30:02,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 02:30:02,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:30:02,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:30:02,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 02:30:02,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:03,087 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:03,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:03,365 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:30:03,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255067757] [2021-10-16 02:30:03,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255067757] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:30:03,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1011519962] [2021-10-16 02:30:03,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:30:03,366 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:30:03,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:30:03,368 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:30:03,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-10-16 02:30:03,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:30:03,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:30:03,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-16 02:30:03,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:04,464 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:04,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:08,698 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:08,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1011519962] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:30:08,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651981610] [2021-10-16 02:30:08,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:30:08,699 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:30:08,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:30:08,704 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:30:08,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-16 02:30:09,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:30:09,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:30:09,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 02:30:09,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:10,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:37,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651981610] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:30:37,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:30:37,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 12, 9, 15, 14] total 54 [2021-10-16 02:30:37,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864475158] [2021-10-16 02:30:37,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-10-16 02:30:37,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:30:37,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-10-16 02:30:37,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=2444, Unknown=0, NotChecked=0, Total=2862 [2021-10-16 02:30:37,732 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 54 states, 54 states have (on average 2.537037037037037) internal successors, (137), 54 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:53,976 WARN L207 SmtUtils]: Spent 6.85 s on a formula simplification. DAG size of input: 70 DAG size of output: 32 [2021-10-16 02:31:09,482 WARN L207 SmtUtils]: Spent 5.90 s on a formula simplification. DAG size of input: 71 DAG size of output: 33 [2021-10-16 02:31:35,735 WARN L207 SmtUtils]: Spent 5.00 s on a formula simplification. DAG size of input: 83 DAG size of output: 37 [2021-10-16 02:31:44,676 WARN L207 SmtUtils]: Spent 5.25 s on a formula simplification. DAG size of input: 90 DAG size of output: 39 [2021-10-16 02:32:41,255 WARN L207 SmtUtils]: Spent 5.04 s on a formula simplification. DAG size of input: 88 DAG size of output: 40 [2021-10-16 02:33:06,221 WARN L207 SmtUtils]: Spent 5.91 s on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2021-10-16 02:33:41,159 WARN L207 SmtUtils]: Spent 7.18 s on a formula simplification. DAG size of input: 85 DAG size of output: 41 [2021-10-16 02:36:45,517 WARN L207 SmtUtils]: Spent 6.57 s on a formula simplification. DAG size of input: 72 DAG size of output: 34 [2021-10-16 02:40:25,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:40:25,694 INFO L93 Difference]: Finished difference Result 158 states and 195 transitions. [2021-10-16 02:40:25,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-16 02:40:25,699 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.537037037037037) internal successors, (137), 54 states have internal predecessors, (137), 0 states have call successors, (0), 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 25 [2021-10-16 02:40:25,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:40:25,700 INFO L225 Difference]: With dead ends: 158 [2021-10-16 02:40:25,701 INFO L226 Difference]: Without dead ends: 94 [2021-10-16 02:40:25,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2880 ImplicationChecksByTransitivity, 444252.6ms TimeCoverageRelationStatistics Valid=1814, Invalid=9100, Unknown=6, NotChecked=0, Total=10920 [2021-10-16 02:40:25,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-16 02:40:25,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 68. [2021-10-16 02:40:25,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 66 states have (on average 1.1363636363636365) internal successors, (75), 67 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:25,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2021-10-16 02:40:25,735 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 25 [2021-10-16 02:40:25,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:40:25,736 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2021-10-16 02:40:25,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.537037037037037) internal successors, (137), 54 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:25,736 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2021-10-16 02:40:25,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-16 02:40:25,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:40:25,748 INFO L512 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-16 02:40:25,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:40:25,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-16 02:40:26,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-10-16 02:40:26,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:40:26,356 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:40:26,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:40:26,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1980104499, now seen corresponding path program 1 times [2021-10-16 02:40:26,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:40:26,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297845960] [2021-10-16 02:40:26,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:40:26,357 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:40:26,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:40:26,359 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:40:26,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-16 02:40:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:40:26,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 02:40:26,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:40:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 102 proven. 40 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-16 02:40:27,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:40:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 102 proven. 40 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-16 02:40:27,408 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:40:27,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297845960] [2021-10-16 02:40:27,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297845960] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:40:27,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [530493706] [2021-10-16 02:40:27,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:40:27,409 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:40:27,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:40:27,410 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:40:27,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-10-16 02:40:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:40:27,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 02:40:27,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:40:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 102 proven. 40 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-16 02:40:28,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:40:28,376 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 102 proven. 40 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-16 02:40:28,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [530493706] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:40:28,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794810213] [2021-10-16 02:40:28,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:40:28,377 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:40:28,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:40:28,378 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:40:28,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-16 02:40:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:40:28,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-16 02:40:28,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:40:29,250 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 32 proven. 155 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:40:29,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:40:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 49 proven. 3 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-10-16 02:40:29,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794810213] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:40:29,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:40:29,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 13, 8] total 26 [2021-10-16 02:40:29,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720840318] [2021-10-16 02:40:29,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-16 02:40:29,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:40:29,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-16 02:40:29,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2021-10-16 02:40:29,623 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 26 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:29,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:40:29,881 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2021-10-16 02:40:29,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 02:40:29,881 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 26 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-16 02:40:29,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:40:29,882 INFO L225 Difference]: With dead ends: 68 [2021-10-16 02:40:29,882 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:40:29,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 729.6ms TimeCoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2021-10-16 02:40:29,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:40:29,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:40:29,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:29,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:40:29,884 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2021-10-16 02:40:29,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:40:29,885 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:40:29,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 26 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:29,885 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:40:29,886 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:40:29,889 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:40:29,889 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:40:29,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-10-16 02:40:30,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-10-16 02:40:30,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-10-16 02:40:30,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:40:30,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:40:30,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:40:30,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:40:30,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:40:30,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:40:42,139 WARN L207 SmtUtils]: Spent 8.75 s on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2021-10-16 02:40:42,143 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-16 02:40:42,144 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 22) no Hoare annotation was computed. [2021-10-16 02:40:42,147 INFO L853 garLoopResultBuilder]: At program point L19-2(line 40) the Hoare annotation is: (let ((.cse8 (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~b~0))) (let ((.cse4 (= ULTIMATE.start_main_~B~0 (_ bv1 32))) (.cse3 (= (bvadd (bvmul (_ bv4 32) .cse8) ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0)) (.cse7 (= ~counter~0 (_ bv5 32))) (.cse0 (bvuge ULTIMATE.start_main_~A~0 (_ bv2 32))) (.cse1 (= (bvadd .cse8 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0)) (.cse2 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~q~0 (_ bv0 32)) (= (_ bv4 32) ULTIMATE.start_main_~b~0) .cse0 .cse1 .cse2 (not (bvuge ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~b~0)) (= (_ bv4 32) ~counter~0) .cse3) (and .cse4 .cse1 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~B~0) .cse2) (let ((.cse6 (bvudiv ULTIMATE.start_main_~b~0 (_ bv2 32)))) (and (= (let ((.cse5 (bvudiv .cse6 (_ bv2 32)))) (bvadd (bvmul (_ bv2 32) .cse5) ULTIMATE.start_main_~r~0 (bvmul (_ bv4 32) (bvmul .cse5 ULTIMATE.start_main_~q~0)) (bvneg .cse6))) ULTIMATE.start_main_~A~0) .cse7 (= ULTIMATE.start_main_~A~0 (bvadd (bvmul (_ bv2 32) .cse6) (bvmul (_ bv2 32) (bvmul .cse6 ULTIMATE.start_main_~q~0)) (bvneg ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0)) .cse1 .cse2 .cse3)) (and (= ULTIMATE.start_main_~b~0 (bvmul (_ bv2 32) ULTIMATE.start_main_~B~0)) .cse4 .cse1 .cse2 .cse3) (and (= (_ bv2 32) ULTIMATE.start_main_~b~0) .cse7 (= ULTIMATE.start_main_~q~0 (_ bv1 32)) .cse0 .cse1 .cse2 (not (bvuge ULTIMATE.start_main_~A~0 (_ bv4 32))))))) [2021-10-16 02:40:42,149 INFO L857 garLoopResultBuilder]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2021-10-16 02:40:42,149 INFO L860 garLoopResultBuilder]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2021-10-16 02:40:42,149 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:40:42,150 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:40:42,150 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:40:42,150 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-16 02:40:42,150 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-10-16 02:40:42,151 INFO L857 garLoopResultBuilder]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2021-10-16 02:40:42,152 INFO L860 garLoopResultBuilder]: At program point L49(lines 26 50) the Hoare annotation is: true [2021-10-16 02:40:42,152 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:40:42,152 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 47) no Hoare annotation was computed. [2021-10-16 02:40:42,153 INFO L857 garLoopResultBuilder]: For program point L38-2(lines 38 47) no Hoare annotation was computed. [2021-10-16 02:40:42,153 INFO L857 garLoopResultBuilder]: For program point L34-1(lines 34 37) no Hoare annotation was computed. [2021-10-16 02:40:42,153 INFO L853 garLoopResultBuilder]: At program point L34-3(lines 34 37) the Hoare annotation is: (let ((.cse3 (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~b~0)) (.cse7 (bvudiv ULTIMATE.start_main_~b~0 (_ bv2 32)))) (let ((.cse0 (= ULTIMATE.start_main_~q~0 (_ bv0 32))) (.cse1 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (.cse2 (= ULTIMATE.start_main_~B~0 (_ bv1 32))) (.cse4 (= (let ((.cse8 (bvudiv .cse7 (_ bv2 32)))) (bvadd (bvmul (_ bv2 32) .cse8) ULTIMATE.start_main_~r~0 (bvmul (_ bv4 32) (bvmul .cse8 ULTIMATE.start_main_~q~0)) (bvneg .cse7))) ULTIMATE.start_main_~A~0)) (.cse5 (= ULTIMATE.start_main_~A~0 (bvadd (bvmul (_ bv2 32) .cse7) (bvmul (_ bv2 32) (bvmul .cse7 ULTIMATE.start_main_~q~0)) (bvneg ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0))) (.cse6 (= (bvadd (bvmul (_ bv4 32) .cse3) ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0))) (or (and (= (_ bv2 32) ~counter~0) (bvuge ULTIMATE.start_main_~r~0 (_ bv2 32)) .cse0 (= (_ bv4 32) ULTIMATE.start_main_~b~0) .cse1) (and (= ~counter~0 (_ bv1 32)) (= ULTIMATE.start_main_~b~0 (bvmul (_ bv2 32) ULTIMATE.start_main_~B~0)) .cse0 .cse2 (= (bvadd .cse3 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0)) (and .cse4 (= ~counter~0 (_ bv5 32)) .cse5 .cse6) (and .cse0 (= ~counter~0 (_ bv0 32)) .cse1 .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~B~0)) (and .cse4 (= (_ bv3 32) ~counter~0) .cse5 .cse6) (and .cse4 .cse5 (= (_ bv4 32) ~counter~0) .cse6)))) [2021-10-16 02:40:42,154 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 46) no Hoare annotation was computed. [2021-10-16 02:40:42,154 INFO L857 garLoopResultBuilder]: For program point L43-2(lines 26 50) no Hoare annotation was computed. [2021-10-16 02:40:42,154 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-16 02:40:42,160 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:40:42,201 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:452) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:40:42,207 INFO L168 Benchmark]: Toolchain (without parser) took 661816.30 ms. Allocated memory was 60.8 MB in the beginning and 92.3 MB in the end (delta: 31.5 MB). Free memory was 39.6 MB in the beginning and 58.2 MB in the end (delta: -18.6 MB). Peak memory consumption was 53.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:40:42,207 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 60.8 MB. Free memory is still 41.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:40:42,208 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.36 ms. Allocated memory is still 60.8 MB. Free memory was 39.4 MB in the beginning and 29.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:40:42,208 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.34 ms. Allocated memory is still 60.8 MB. Free memory was 29.1 MB in the beginning and 45.3 MB in the end (delta: -16.2 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:40:42,208 INFO L168 Benchmark]: Boogie Preprocessor took 37.78 ms. Allocated memory is still 60.8 MB. Free memory was 45.3 MB in the beginning and 44.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:40:42,210 INFO L168 Benchmark]: RCFGBuilder took 391.55 ms. Allocated memory is still 60.8 MB. Free memory was 44.1 MB in the beginning and 34.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:40:42,210 INFO L168 Benchmark]: TraceAbstraction took 660999.20 ms. Allocated memory was 60.8 MB in the beginning and 92.3 MB in the end (delta: 31.5 MB). Free memory was 33.9 MB in the beginning and 58.2 MB in the end (delta: -24.3 MB). Peak memory consumption was 46.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:40:42,212 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 60.8 MB. Free memory is still 41.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.36 ms. Allocated memory is still 60.8 MB. Free memory was 39.4 MB in the beginning and 29.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.34 ms. Allocated memory is still 60.8 MB. Free memory was 29.1 MB in the beginning and 45.3 MB in the end (delta: -16.2 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.78 ms. Allocated memory is still 60.8 MB. Free memory was 45.3 MB in the beginning and 44.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 391.55 ms. Allocated memory is still 60.8 MB. Free memory was 44.1 MB in the beginning and 34.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 660999.20 ms. Allocated memory was 60.8 MB in the beginning and 92.3 MB in the end (delta: 31.5 MB). Free memory was 33.9 MB in the beginning and 58.2 MB in the end (delta: -24.3 MB). Peak memory consumption was 46.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 660894.7ms, OverallIterations: 9, TraceHistogramMax: 12, EmptinessCheckTime: 37.4ms, AutomataDifference: 597379.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 11645.7ms, InitialAbstractionConstructionTime: 10.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 157 SDtfs, 849 SDslu, 865 SDs, 0 SdLazy, 1447 SolverSat, 678 SolverUnsat, 15 SolverUnknown, 0 SolverNotchecked, 172474.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 884 GetRequests, 694 SyntacticMatches, 6 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3116 ImplicationChecksByTransitivity, 449290.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=8, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 104.1ms AutomataMinimizationTime, 9 MinimizatonAttempts, 104 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 19 NumberOfFragments, 396 HoareAnnotationTreeSize, 4 FomulaSimplifications, 402 FormulaSimplificationTreeSizeReduction, 267.9ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 592 FormulaSimplificationTreeSizeReductionInter, 11370.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 181.8ms SsaConstructionTime, 916.9ms SatisfiabilityAnalysisTime, 43605.3ms InterpolantComputationTime, 419 NumberOfCodeBlocks, 419 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 800 ConstructedInterpolants, 0 QuantifiedInterpolants, 4509 SizeOfPredicates, 77 NumberOfNonLiveVariables, 1120 ConjunctsInSsa, 197 ConjunctsInUnsatCore, 38 InterpolantComputations, 8 PerfectInterpolantSequences, 928/1494 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:40:42,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2460bb25-4b90-40fb-b16b-44f02dc19244/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...