./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-buckets-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-buckets-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG --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 5a4c2149f6fe1f453f0ff04220f5041f2227f6654d0fa84d48205415ce284fcb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-buckets-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG --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 5a4c2149f6fe1f453f0ff04220f5041f2227f6654d0fa84d48205415ce284fcb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 06:01:01,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 06:01:01,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 06:01:01,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 06:01:01,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 06:01:01,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 06:01:01,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 06:01:01,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 06:01:01,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 06:01:01,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 06:01:01,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 06:01:01,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 06:01:01,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 06:01:01,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 06:01:01,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 06:01:01,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 06:01:01,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 06:01:01,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 06:01:01,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 06:01:01,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 06:01:01,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 06:01:01,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 06:01:01,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 06:01:01,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 06:01:01,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 06:01:01,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 06:01:01,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 06:01:01,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 06:01:01,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 06:01:01,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 06:01:01,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 06:01:01,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 06:01:01,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 06:01:01,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 06:01:01,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 06:01:01,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 06:01:01,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 06:01:01,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 06:01:01,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 06:01:01,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 06:01:01,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 06:01:01,433 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 06:01:01,468 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 06:01:01,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 06:01:01,470 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 06:01:01,472 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 06:01:01,472 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 06:01:01,472 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 06:01:01,472 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 06:01:01,473 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 06:01:01,473 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 06:01:01,473 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 06:01:01,478 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 06:01:01,478 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 06:01:01,479 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 06:01:01,479 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 06:01:01,479 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 06:01:01,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 06:01:01,480 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 06:01:01,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 06:01:01,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 06:01:01,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 06:01:01,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 06:01:01,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 06:01:01,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 06:01:01,483 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 06:01:01,483 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 06:01:01,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 06:01:01,483 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 06:01:01,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 06:01:01,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 06:01:01,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 06:01:01,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 06:01:01,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 06:01:01,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 06:01:01,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 06:01:01,486 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 06:01:01,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 06:01:01,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 06:01:01,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 06:01:01,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 06:01:01,487 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a4c2149f6fe1f453f0ff04220f5041f2227f6654d0fa84d48205415ce284fcb [2021-10-29 06:01:01,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 06:01:01,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 06:01:01,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 06:01:01,857 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 06:01:01,857 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 06:01:01,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/forester-heap/sll-buckets-2.i [2021-10-29 06:01:01,928 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/data/e6f7e1c84/40ae4a6384684fa3a5a6ea5c2c1ba4e1/FLAGad16166f6 [2021-10-29 06:01:02,643 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 06:01:02,643 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i [2021-10-29 06:01:02,658 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/data/e6f7e1c84/40ae4a6384684fa3a5a6ea5c2c1ba4e1/FLAGad16166f6 [2021-10-29 06:01:02,870 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/data/e6f7e1c84/40ae4a6384684fa3a5a6ea5c2c1ba4e1 [2021-10-29 06:01:02,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 06:01:02,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 06:01:02,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 06:01:02,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 06:01:02,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 06:01:02,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:01:02" (1/1) ... [2021-10-29 06:01:02,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cbb1ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:02, skipping insertion in model container [2021-10-29 06:01:02,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:01:02" (1/1) ... [2021-10-29 06:01:02,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 06:01:02,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 06:01:03,285 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22663,22676] [2021-10-29 06:01:03,290 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22734,22747] [2021-10-29 06:01:03,292 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22862,22875] [2021-10-29 06:01:03,296 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23275,23288] [2021-10-29 06:01:03,298 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23364,23377] [2021-10-29 06:01:03,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 06:01:03,310 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 06:01:03,353 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22663,22676] [2021-10-29 06:01:03,354 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22734,22747] [2021-10-29 06:01:03,356 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22862,22875] [2021-10-29 06:01:03,360 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23275,23288] [2021-10-29 06:01:03,361 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23364,23377] [2021-10-29 06:01:03,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 06:01:03,392 INFO L208 MainTranslator]: Completed translation [2021-10-29 06:01:03,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:03 WrapperNode [2021-10-29 06:01:03,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 06:01:03,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 06:01:03,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 06:01:03,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 06:01:03,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:03" (1/1) ... [2021-10-29 06:01:03,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:03" (1/1) ... [2021-10-29 06:01:03,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 06:01:03,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 06:01:03,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 06:01:03,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 06:01:03,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:03" (1/1) ... [2021-10-29 06:01:03,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:03" (1/1) ... [2021-10-29 06:01:03,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:03" (1/1) ... [2021-10-29 06:01:03,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:03" (1/1) ... [2021-10-29 06:01:03,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:03" (1/1) ... [2021-10-29 06:01:03,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:03" (1/1) ... [2021-10-29 06:01:03,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:03" (1/1) ... [2021-10-29 06:01:03,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 06:01:03,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 06:01:03,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 06:01:03,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 06:01:03,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:03" (1/1) ... [2021-10-29 06:01:03,499 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 06:01:03,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:01:03,540 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 06:01:03,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 06:01:03,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 06:01:03,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 06:01:03,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 06:01:03,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 06:01:03,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 06:01:03,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 06:01:03,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 06:01:03,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 06:01:03,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 06:01:03,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 06:01:04,573 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 06:01:04,574 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-29 06:01:04,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:01:04 BoogieIcfgContainer [2021-10-29 06:01:04,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 06:01:04,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 06:01:04,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 06:01:04,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 06:01:04,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:01:02" (1/3) ... [2021-10-29 06:01:04,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7a98bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:01:04, skipping insertion in model container [2021-10-29 06:01:04,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:03" (2/3) ... [2021-10-29 06:01:04,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7a98bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:01:04, skipping insertion in model container [2021-10-29 06:01:04,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:01:04" (3/3) ... [2021-10-29 06:01:04,590 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-buckets-2.i [2021-10-29 06:01:04,597 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 06:01:04,597 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-10-29 06:01:04,647 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 06:01:04,655 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 06:01:04,655 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-29 06:01:04,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 31 states have (on average 1.935483870967742) internal successors, (60), 36 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:04,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 06:01:04,679 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:04,680 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 06:01:04,681 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-29 06:01:04,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:04,688 INFO L85 PathProgramCache]: Analyzing trace with hash 196178540, now seen corresponding path program 1 times [2021-10-29 06:01:04,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:04,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804823307] [2021-10-29 06:01:04,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:04,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:05,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:05,004 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:05,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804823307] [2021-10-29 06:01:05,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804823307] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:05,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:05,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:05,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627497291] [2021-10-29 06:01:05,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 06:01:05,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:05,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 06:01:05,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 06:01:05,039 INFO L87 Difference]: Start difference. First operand has 37 states, 31 states have (on average 1.935483870967742) internal successors, (60), 36 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:05,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:05,168 INFO L93 Difference]: Finished difference Result 96 states and 160 transitions. [2021-10-29 06:01:05,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 06:01:05,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-10-29 06:01:05,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:05,181 INFO L225 Difference]: With dead ends: 96 [2021-10-29 06:01:05,182 INFO L226 Difference]: Without dead ends: 59 [2021-10-29 06:01:05,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:05,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-29 06:01:05,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2021-10-29 06:01:05,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.303030303030303) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:05,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2021-10-29 06:01:05,229 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 5 [2021-10-29 06:01:05,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:05,231 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2021-10-29 06:01:05,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:05,231 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2021-10-29 06:01:05,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 06:01:05,232 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:05,232 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:05,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 06:01:05,235 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-29 06:01:05,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:05,241 INFO L85 PathProgramCache]: Analyzing trace with hash -450856688, now seen corresponding path program 1 times [2021-10-29 06:01:05,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:05,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465629064] [2021-10-29 06:01:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:05,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:05,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:05,361 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:05,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465629064] [2021-10-29 06:01:05,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465629064] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:05,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:05,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:05,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592287781] [2021-10-29 06:01:05,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:05,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:05,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:05,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:05,365 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) 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) [2021-10-29 06:01:05,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:05,421 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2021-10-29 06:01:05,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:05,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) 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 [2021-10-29 06:01:05,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:05,424 INFO L225 Difference]: With dead ends: 41 [2021-10-29 06:01:05,424 INFO L226 Difference]: Without dead ends: 39 [2021-10-29 06:01:05,425 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:05,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-29 06:01:05,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2021-10-29 06:01:05,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.28125) internal successors, (41), 34 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) [2021-10-29 06:01:05,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2021-10-29 06:01:05,439 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 7 [2021-10-29 06:01:05,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:05,440 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2021-10-29 06:01:05,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) 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) [2021-10-29 06:01:05,441 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2021-10-29 06:01:05,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 06:01:05,442 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:05,443 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:05,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 06:01:05,449 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-29 06:01:05,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:05,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1874340424, now seen corresponding path program 1 times [2021-10-29 06:01:05,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:05,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145295801] [2021-10-29 06:01:05,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:05,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:05,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:05,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:05,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145295801] [2021-10-29 06:01:05,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145295801] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:05,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:05,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:05,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692393711] [2021-10-29 06:01:05,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:05,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:05,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:05,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:05,577 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:05,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:05,618 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2021-10-29 06:01:05,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:05,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 06:01:05,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:05,620 INFO L225 Difference]: With dead ends: 39 [2021-10-29 06:01:05,621 INFO L226 Difference]: Without dead ends: 37 [2021-10-29 06:01:05,621 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:05,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-29 06:01:05,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2021-10-29 06:01:05,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 32 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:05,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2021-10-29 06:01:05,632 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 8 [2021-10-29 06:01:05,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:05,633 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2021-10-29 06:01:05,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:05,634 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2021-10-29 06:01:05,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 06:01:05,635 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:05,635 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:05,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 06:01:05,636 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-29 06:01:05,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:05,637 INFO L85 PathProgramCache]: Analyzing trace with hash 2023416261, now seen corresponding path program 1 times [2021-10-29 06:01:05,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:05,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892106784] [2021-10-29 06:01:05,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:05,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:05,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:05,887 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:05,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892106784] [2021-10-29 06:01:05,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892106784] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:05,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:05,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 06:01:05,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412001915] [2021-10-29 06:01:05,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 06:01:05,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:05,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 06:01:05,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:05,893 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:06,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:06,049 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2021-10-29 06:01:06,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 06:01:06,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 06:01:06,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:06,052 INFO L225 Difference]: With dead ends: 53 [2021-10-29 06:01:06,052 INFO L226 Difference]: Without dead ends: 42 [2021-10-29 06:01:06,053 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 06:01:06,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-29 06:01:06,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2021-10-29 06:01:06,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:06,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2021-10-29 06:01:06,060 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 9 [2021-10-29 06:01:06,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:06,061 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2021-10-29 06:01:06,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:06,061 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2021-10-29 06:01:06,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 06:01:06,062 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:06,062 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:06,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 06:01:06,063 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-29 06:01:06,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:06,064 INFO L85 PathProgramCache]: Analyzing trace with hash 783479132, now seen corresponding path program 1 times [2021-10-29 06:01:06,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:06,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767479321] [2021-10-29 06:01:06,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:06,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:06,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:06,155 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:06,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767479321] [2021-10-29 06:01:06,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767479321] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 06:01:06,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262603176] [2021-10-29 06:01:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:06,157 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:01:06,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:01:06,158 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:01:06,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 06:01:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:06,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-29 06:01:06,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:01:06,761 INFO L354 Elim1Store]: treesize reduction 255, result has 13.3 percent of original size [2021-10-29 06:01:06,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 233 treesize of output 249 [2021-10-29 06:01:06,781 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:06,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 266 [2021-10-29 06:01:06,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:06,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:01:06,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:06,889 INFO L354 Elim1Store]: treesize reduction 228, result has 14.3 percent of original size [2021-10-29 06:01:06,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 266 treesize of output 204 [2021-10-29 06:01:06,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:06,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:01:07,025 INFO L354 Elim1Store]: treesize reduction 284, result has 12.3 percent of original size [2021-10-29 06:01:07,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 363 treesize of output 209 [2021-10-29 06:01:08,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 391 treesize of output 388 [2021-10-29 06:01:08,631 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-29 06:01:08,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 388 treesize of output 353 [2021-10-29 06:01:08,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:08,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:01:08,869 INFO L354 Elim1Store]: treesize reduction 584, result has 8.5 percent of original size [2021-10-29 06:01:08,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 22 case distinctions, treesize of input 353 treesize of output 266 [2021-10-29 06:01:09,028 INFO L354 Elim1Store]: treesize reduction 160, result has 33.6 percent of original size [2021-10-29 06:01:09,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 318 treesize of output 372 [2021-10-29 06:01:09,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 98 [2021-10-29 06:01:09,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 89 [2021-10-29 06:01:09,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 80 [2021-10-29 06:01:09,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-10-29 06:01:10,004 INFO L354 Elim1Store]: treesize reduction 201, result has 2.0 percent of original size [2021-10-29 06:01:10,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 125 treesize of output 53 [2021-10-29 06:01:10,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:10,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:01:10,146 INFO L354 Elim1Store]: treesize reduction 44, result has 15.4 percent of original size [2021-10-29 06:01:10,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 227 treesize of output 178 [2021-10-29 06:01:10,162 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 178 treesize of output 178 [2021-10-29 06:01:10,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-10-29 06:01:10,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [841360308] [2021-10-29 06:01:10,198 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-10-29 06:01:10,198 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 06:01:10,203 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 06:01:10,209 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 06:01:10,209 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 06:01:10,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,262 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,263 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,264 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,264 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,265 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-29 06:01:10,266 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-29 06:01:10,267 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,268 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,268 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,269 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,269 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-29 06:01:10,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-29 06:01:10,271 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,272 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,272 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,272 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,273 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-10-29 06:01:10,273 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-29 06:01:10,275 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,275 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,276 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,276 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-10-29 06:01:10,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-29 06:01:10,280 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,281 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,283 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-29 06:01:10,284 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-29 06:01:10,286 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,287 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,288 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,289 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-29 06:01:10,289 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 06:01:10,290 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,291 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,291 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,292 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-10-29 06:01:10,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-29 06:01:10,294 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,297 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,298 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,301 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,305 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-29 06:01:10,306 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 06:01:10,307 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,308 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,309 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,309 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,310 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-29 06:01:10,310 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-29 06:01:10,311 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,312 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,312 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,313 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,314 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,314 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-29 06:01:10,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-29 06:01:10,315 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-29 06:01:10,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-29 06:01:10,322 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,322 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,323 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,323 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,324 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-10-29 06:01:10,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-29 06:01:10,325 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,326 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,326 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,327 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-10-29 06:01:10,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-29 06:01:10,328 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,329 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,330 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,330 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,331 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,331 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-29 06:01:10,332 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-29 06:01:10,332 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,332 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-29 06:01:10,335 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-29 06:01:10,335 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,336 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,336 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,340 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-10-29 06:01:10,341 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-29 06:01:10,341 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,342 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,342 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,343 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-29 06:01:10,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-29 06:01:10,345 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,345 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,346 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,346 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-29 06:01:10,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-10-29 06:01:10,348 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,352 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,355 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,355 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,356 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-10-29 06:01:10,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-29 06:01:10,358 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,358 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,359 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,359 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-29 06:01:10,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-29 06:01:10,362 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,363 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,364 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-10-29 06:01:10,365 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-29 06:01:10,365 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,366 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,366 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,367 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-10-29 06:01:10,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-29 06:01:10,369 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,370 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,371 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-10-29 06:01:10,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 282 [2021-10-29 06:01:10,373 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:10,374 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:10,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 478 [2021-10-29 06:01:10,379 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 541 [2021-10-29 06:01:10,392 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@c6c2269 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:571) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:444) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:242) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:402) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:228) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) 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:609) 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:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) 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) [2021-10-29 06:01:10,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 06:01:10,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-29 06:01:10,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723144263] [2021-10-29 06:01:10,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 06:01:10,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:10,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 06:01:10,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 06:01:10,396 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:10,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 06:01:10,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 06:01:10,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:01:10,610 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@c6c2269 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:356) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:204) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:869) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) 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:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) 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) [2021-10-29 06:01:10,612 INFO L168 Benchmark]: Toolchain (without parser) took 7737.82 ms. Allocated memory was 123.7 MB in the beginning and 180.4 MB in the end (delta: 56.6 MB). Free memory was 87.2 MB in the beginning and 74.3 MB in the end (delta: 12.8 MB). Peak memory consumption was 68.5 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:10,612 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 123.7 MB. Free memory was 104.7 MB in the beginning and 104.7 MB in the end (delta: 66.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 06:01:10,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 517.31 ms. Allocated memory is still 123.7 MB. Free memory was 87.0 MB in the beginning and 91.6 MB in the end (delta: -4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:10,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.79 ms. Allocated memory is still 123.7 MB. Free memory was 91.6 MB in the beginning and 89.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:10,614 INFO L168 Benchmark]: Boogie Preprocessor took 39.92 ms. Allocated memory is still 123.7 MB. Free memory was 89.6 MB in the beginning and 87.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:10,614 INFO L168 Benchmark]: RCFGBuilder took 1089.11 ms. Allocated memory is still 123.7 MB. Free memory was 87.5 MB in the beginning and 59.4 MB in the end (delta: 28.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:10,615 INFO L168 Benchmark]: TraceAbstraction took 6032.94 ms. Allocated memory was 123.7 MB in the beginning and 180.4 MB in the end (delta: 56.6 MB). Free memory was 59.0 MB in the beginning and 74.3 MB in the end (delta: -15.3 MB). Peak memory consumption was 43.4 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:10,617 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 123.7 MB. Free memory was 104.7 MB in the beginning and 104.7 MB in the end (delta: 66.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 517.31 ms. Allocated memory is still 123.7 MB. Free memory was 87.0 MB in the beginning and 91.6 MB in the end (delta: -4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.79 ms. Allocated memory is still 123.7 MB. Free memory was 91.6 MB in the beginning and 89.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.92 ms. Allocated memory is still 123.7 MB. Free memory was 89.6 MB in the beginning and 87.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1089.11 ms. Allocated memory is still 123.7 MB. Free memory was 87.5 MB in the beginning and 59.4 MB in the end (delta: 28.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6032.94 ms. Allocated memory was 123.7 MB in the beginning and 180.4 MB in the end (delta: 56.6 MB). Free memory was 59.0 MB in the beginning and 74.3 MB in the end (delta: -15.3 MB). Peak memory consumption was 43.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@c6c2269 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@c6c2269: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-29 06:01:10,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/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-b2eff8b [2021-10-29 06:01:13,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 06:01:13,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 06:01:13,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 06:01:13,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 06:01:13,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 06:01:13,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 06:01:13,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 06:01:13,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 06:01:13,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 06:01:13,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 06:01:13,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 06:01:13,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 06:01:13,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 06:01:13,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 06:01:13,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 06:01:13,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 06:01:13,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 06:01:13,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 06:01:13,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 06:01:13,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 06:01:13,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 06:01:13,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 06:01:13,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 06:01:13,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 06:01:13,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 06:01:13,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 06:01:13,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 06:01:13,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 06:01:13,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 06:01:13,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 06:01:13,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 06:01:13,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 06:01:13,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 06:01:13,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 06:01:13,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 06:01:13,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 06:01:13,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 06:01:13,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 06:01:13,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 06:01:13,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 06:01:13,512 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 06:01:13,540 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 06:01:13,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 06:01:13,542 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 06:01:13,542 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 06:01:13,543 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 06:01:13,543 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 06:01:13,544 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 06:01:13,544 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 06:01:13,544 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 06:01:13,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 06:01:13,546 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 06:01:13,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 06:01:13,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 06:01:13,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 06:01:13,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 06:01:13,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 06:01:13,549 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 06:01:13,549 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 06:01:13,549 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 06:01:13,549 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 06:01:13,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 06:01:13,550 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 06:01:13,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 06:01:13,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 06:01:13,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 06:01:13,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 06:01:13,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 06:01:13,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 06:01:13,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 06:01:13,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 06:01:13,552 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 06:01:13,553 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 06:01:13,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 06:01:13,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 06:01:13,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 06:01:13,554 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a4c2149f6fe1f453f0ff04220f5041f2227f6654d0fa84d48205415ce284fcb [2021-10-29 06:01:13,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 06:01:14,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 06:01:14,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 06:01:14,018 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 06:01:14,019 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 06:01:14,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/forester-heap/sll-buckets-2.i [2021-10-29 06:01:14,096 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/data/d6539e398/ff176fa9b9b34975a5b746157f156107/FLAG852d9c62a [2021-10-29 06:01:14,747 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 06:01:14,748 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i [2021-10-29 06:01:14,763 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/data/d6539e398/ff176fa9b9b34975a5b746157f156107/FLAG852d9c62a [2021-10-29 06:01:15,019 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/data/d6539e398/ff176fa9b9b34975a5b746157f156107 [2021-10-29 06:01:15,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 06:01:15,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 06:01:15,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 06:01:15,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 06:01:15,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 06:01:15,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:01:15" (1/1) ... [2021-10-29 06:01:15,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa50287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:15, skipping insertion in model container [2021-10-29 06:01:15,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:01:15" (1/1) ... [2021-10-29 06:01:15,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 06:01:15,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 06:01:15,446 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22663,22676] [2021-10-29 06:01:15,451 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22734,22747] [2021-10-29 06:01:15,453 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22862,22875] [2021-10-29 06:01:15,458 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23275,23288] [2021-10-29 06:01:15,460 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23364,23377] [2021-10-29 06:01:15,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 06:01:15,479 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 06:01:15,526 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22663,22676] [2021-10-29 06:01:15,528 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22734,22747] [2021-10-29 06:01:15,529 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22862,22875] [2021-10-29 06:01:15,534 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23275,23288] [2021-10-29 06:01:15,535 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_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23364,23377] [2021-10-29 06:01:15,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 06:01:15,573 INFO L208 MainTranslator]: Completed translation [2021-10-29 06:01:15,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:15 WrapperNode [2021-10-29 06:01:15,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 06:01:15,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 06:01:15,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 06:01:15,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 06:01:15,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:15" (1/1) ... [2021-10-29 06:01:15,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:15" (1/1) ... [2021-10-29 06:01:15,633 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 06:01:15,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 06:01:15,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 06:01:15,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 06:01:15,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:15" (1/1) ... [2021-10-29 06:01:15,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:15" (1/1) ... [2021-10-29 06:01:15,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:15" (1/1) ... [2021-10-29 06:01:15,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:15" (1/1) ... [2021-10-29 06:01:15,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:15" (1/1) ... [2021-10-29 06:01:15,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:15" (1/1) ... [2021-10-29 06:01:15,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:15" (1/1) ... [2021-10-29 06:01:15,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 06:01:15,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 06:01:15,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 06:01:15,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 06:01:15,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:15" (1/1) ... [2021-10-29 06:01:15,685 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 06:01:15,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:01:15,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 06:01:15,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 06:01:15,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-29 06:01:15,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 06:01:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 06:01:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 06:01:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 06:01:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 06:01:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-29 06:01:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 06:01:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 06:01:15,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 06:01:18,463 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 06:01:18,464 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-29 06:01:18,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:01:18 BoogieIcfgContainer [2021-10-29 06:01:18,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 06:01:18,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 06:01:18,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 06:01:18,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 06:01:18,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:01:15" (1/3) ... [2021-10-29 06:01:18,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30955aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:01:18, skipping insertion in model container [2021-10-29 06:01:18,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:15" (2/3) ... [2021-10-29 06:01:18,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30955aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:01:18, skipping insertion in model container [2021-10-29 06:01:18,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:01:18" (3/3) ... [2021-10-29 06:01:18,475 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-buckets-2.i [2021-10-29 06:01:18,481 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 06:01:18,481 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-10-29 06:01:18,558 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 06:01:18,565 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 06:01:18,565 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-29 06:01:18,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 42 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:18,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 06:01:18,587 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:18,587 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:18,588 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-29 06:01:18,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:18,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1810667474, now seen corresponding path program 1 times [2021-10-29 06:01:18,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 06:01:18,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883672690] [2021-10-29 06:01:18,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:18,618 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 06:01:18,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 06:01:18,622 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 06:01:18,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 06:01:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:18,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 06:01:18,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:01:18,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:18,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:01:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:18,971 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 06:01:18,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883672690] [2021-10-29 06:01:18,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883672690] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:18,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:18,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 06:01:18,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430396317] [2021-10-29 06:01:18,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 06:01:18,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 06:01:19,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 06:01:19,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 06:01:19,005 INFO L87 Difference]: Start difference. First operand has 43 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 42 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:19,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:19,225 INFO L93 Difference]: Finished difference Result 109 states and 185 transitions. [2021-10-29 06:01:19,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 06:01:19,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 06:01:19,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:19,237 INFO L225 Difference]: With dead ends: 109 [2021-10-29 06:01:19,237 INFO L226 Difference]: Without dead ends: 64 [2021-10-29 06:01:19,240 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:19,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-29 06:01:19,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 40. [2021-10-29 06:01:19,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 39 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) [2021-10-29 06:01:19,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2021-10-29 06:01:19,281 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 7 [2021-10-29 06:01:19,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:19,282 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2021-10-29 06:01:19,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:19,282 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2021-10-29 06:01:19,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 06:01:19,283 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:19,283 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:19,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 06:01:19,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 06:01:19,503 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-29 06:01:19,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:19,504 INFO L85 PathProgramCache]: Analyzing trace with hash 332382386, now seen corresponding path program 1 times [2021-10-29 06:01:19,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 06:01:19,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393831816] [2021-10-29 06:01:19,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:19,505 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 06:01:19,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 06:01:19,507 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 06:01:19,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 06:01:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:19,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 06:01:19,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:01:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:19,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:01:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:19,696 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 06:01:19,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393831816] [2021-10-29 06:01:19,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393831816] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:19,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:19,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 06:01:19,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188952864] [2021-10-29 06:01:19,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:19,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 06:01:19,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:19,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:19,700 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:19,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:19,784 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2021-10-29 06:01:19,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:19,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 06:01:19,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:19,787 INFO L225 Difference]: With dead ends: 43 [2021-10-29 06:01:19,787 INFO L226 Difference]: Without dead ends: 41 [2021-10-29 06:01:19,788 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:19,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-29 06:01:19,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-10-29 06:01:19,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 37 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) [2021-10-29 06:01:19,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2021-10-29 06:01:19,795 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 8 [2021-10-29 06:01:19,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:19,795 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2021-10-29 06:01:19,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:19,796 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2021-10-29 06:01:19,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 06:01:19,797 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:19,797 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:19,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 06:01:20,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 06:01:20,011 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-29 06:01:20,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:20,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1713955348, now seen corresponding path program 1 times [2021-10-29 06:01:20,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 06:01:20,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879485495] [2021-10-29 06:01:20,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:20,013 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 06:01:20,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 06:01:20,015 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 06:01:20,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 06:01:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:20,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-29 06:01:20,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:01:20,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:20,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:20,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 182 [2021-10-29 06:01:20,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:01:21,177 INFO L354 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2021-10-29 06:01:21,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 227 treesize of output 165 [2021-10-29 06:01:21,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:01:22,264 INFO L354 Elim1Store]: treesize reduction 82, result has 27.4 percent of original size [2021-10-29 06:01:22,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 249 treesize of output 171 [2021-10-29 06:01:22,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:22,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:22,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 249 treesize of output 212 [2021-10-29 06:01:22,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:01:22,343 INFO L354 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2021-10-29 06:01:22,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 212 treesize of output 163 [2021-10-29 06:01:22,357 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:01:22,464 INFO L354 Elim1Store]: treesize reduction 178, result has 18.0 percent of original size [2021-10-29 06:01:22,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 157 treesize of output 169 [2021-10-29 06:01:22,467 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 06:01:22,483 INFO L354 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2021-10-29 06:01:22,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 180 treesize of output 164 [2021-10-29 06:01:23,237 INFO L354 Elim1Store]: treesize reduction 45, result has 8.2 percent of original size [2021-10-29 06:01:23,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 157 treesize of output 83 [2021-10-29 06:01:23,273 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-10-29 06:01:23,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 65 treesize of output 37 [2021-10-29 06:01:23,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:23,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:01:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:23,551 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 06:01:23,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879485495] [2021-10-29 06:01:23,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879485495] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:23,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:23,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-29 06:01:23,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180599053] [2021-10-29 06:01:23,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 06:01:23,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 06:01:23,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 06:01:23,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 06:01:23,555 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:26,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:26,618 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2021-10-29 06:01:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 06:01:26,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 06:01:26,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:26,621 INFO L225 Difference]: With dead ends: 61 [2021-10-29 06:01:26,621 INFO L226 Difference]: Without dead ends: 50 [2021-10-29 06:01:26,622 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-29 06:01:26,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-29 06:01:26,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2021-10-29 06:01:26,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 46 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:26,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2021-10-29 06:01:26,633 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 9 [2021-10-29 06:01:26,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:26,633 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2021-10-29 06:01:26,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:26,634 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2021-10-29 06:01:26,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 06:01:26,634 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:26,635 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:26,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 06:01:26,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 06:01:26,851 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-29 06:01:26,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:26,851 INFO L85 PathProgramCache]: Analyzing trace with hash 589814998, now seen corresponding path program 1 times [2021-10-29 06:01:26,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 06:01:26,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531596532] [2021-10-29 06:01:26,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:26,852 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 06:01:26,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 06:01:26,854 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 06:01:26,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 06:01:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:26,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 06:01:26,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:01:27,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:27,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:01:27,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:27,070 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 06:01:27,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531596532] [2021-10-29 06:01:27,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531596532] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:27,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:27,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 06:01:27,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344210230] [2021-10-29 06:01:27,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:27,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 06:01:27,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:27,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:27,073 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:29,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:29,181 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2021-10-29 06:01:29,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:29,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 06:01:29,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:29,187 INFO L225 Difference]: With dead ends: 48 [2021-10-29 06:01:29,187 INFO L226 Difference]: Without dead ends: 46 [2021-10-29 06:01:29,187 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:29,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-29 06:01:29,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-10-29 06:01:29,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.255813953488372) internal successors, (54), 44 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:29,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2021-10-29 06:01:29,203 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 9 [2021-10-29 06:01:29,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:29,205 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2021-10-29 06:01:29,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:29,206 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2021-10-29 06:01:29,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 06:01:29,210 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:29,210 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:29,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 06:01:29,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 06:01:29,411 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-29 06:01:29,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:29,412 INFO L85 PathProgramCache]: Analyzing trace with hash 2092073026, now seen corresponding path program 1 times [2021-10-29 06:01:29,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 06:01:29,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27809456] [2021-10-29 06:01:29,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:29,413 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 06:01:29,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 06:01:29,414 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 06:01:29,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 06:01:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:29,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-29 06:01:29,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:01:29,648 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:29,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-10-29 06:01:29,960 INFO L354 Elim1Store]: treesize reduction 499, result has 7.1 percent of original size [2021-10-29 06:01:29,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 154 treesize of output 92 [2021-10-29 06:01:30,203 INFO L354 Elim1Store]: treesize reduction 330, result has 10.8 percent of original size [2021-10-29 06:01:30,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 123 treesize of output 97 [2021-10-29 06:01:30,297 INFO L354 Elim1Store]: treesize reduction 119, result has 14.4 percent of original size [2021-10-29 06:01:30,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 146 treesize of output 138 [2021-10-29 06:01:30,806 INFO L354 Elim1Store]: treesize reduction 336, result has 12.3 percent of original size [2021-10-29 06:01:30,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 149 treesize of output 117 [2021-10-29 06:01:30,897 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-29 06:01:30,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 145 treesize of output 149 [2021-10-29 06:01:31,475 INFO L354 Elim1Store]: treesize reduction 498, result has 9.8 percent of original size [2021-10-29 06:01:31,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 147 treesize of output 103 [2021-10-29 06:01:32,827 INFO L354 Elim1Store]: treesize reduction 256, result has 0.4 percent of original size [2021-10-29 06:01:32,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 135 treesize of output 53 [2021-10-29 06:01:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:32,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:01:33,051 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:33,052 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-10-29 06:01:35,193 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~item~0.offset_26 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.base_26 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_26)))) (not (= (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_26 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_26) v_ULTIMATE.start_main_~item~0.offset_26 (_ bv0 32)) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~item~0.offset_26) v_DerPreprocessor_2)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset) (_ bv0 32))))) is different from false [2021-10-29 06:01:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:35,240 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 06:01:35,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27809456] [2021-10-29 06:01:35,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27809456] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:01:35,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [160235091] [2021-10-29 06:01:35,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:35,241 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 06:01:35,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 06:01:35,247 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 06:01:35,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-29 06:01:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:35,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-29 06:01:35,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:01:35,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:35,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:35,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 107 [2021-10-29 06:01:35,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:01:35,636 INFO L354 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2021-10-29 06:01:35,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 132 treesize of output 90 [2021-10-29 06:01:35,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:01:35,742 INFO L354 Elim1Store]: treesize reduction 82, result has 27.4 percent of original size [2021-10-29 06:01:35,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 122 treesize of output 96 [2021-10-29 06:01:35,808 INFO L354 Elim1Store]: treesize reduction 119, result has 14.4 percent of original size [2021-10-29 06:01:35,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 145 treesize of output 137 [2021-10-29 06:01:36,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:36,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:01:36,166 INFO L354 Elim1Store]: treesize reduction 198, result has 18.5 percent of original size [2021-10-29 06:01:36,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 111 treesize of output 103 [2021-10-29 06:01:36,238 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-29 06:01:36,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 107 treesize of output 111 [2021-10-29 06:01:36,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:36,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:01:36,745 INFO L354 Elim1Store]: treesize reduction 358, result has 12.7 percent of original size [2021-10-29 06:01:36,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 109 treesize of output 89 [2021-10-29 06:01:37,838 INFO L354 Elim1Store]: treesize reduction 108, result has 10.7 percent of original size [2021-10-29 06:01:37,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 95 treesize of output 53 [2021-10-29 06:01:37,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:37,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:01:37,941 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:37,943 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-10-29 06:01:40,077 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~item~0.offset_28 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.base_28 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_28)))) (not (= (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_28 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_28) v_ULTIMATE.start_main_~item~0.offset_28 (_ bv0 32)) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~item~0.offset_28) v_DerPreprocessor_2)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset) (_ bv0 32))))) is different from false [2021-10-29 06:01:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:40,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [160235091] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:01:40,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140323068] [2021-10-29 06:01:40,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:40,121 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:01:40,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:01:40,131 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:01:40,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-29 06:01:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:40,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-29 06:01:40,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:01:40,353 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:40,354 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-10-29 06:01:40,678 INFO L354 Elim1Store]: treesize reduction 499, result has 7.1 percent of original size [2021-10-29 06:01:40,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 153 treesize of output 91 [2021-10-29 06:01:40,920 INFO L354 Elim1Store]: treesize reduction 330, result has 10.8 percent of original size [2021-10-29 06:01:40,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 122 treesize of output 96 [2021-10-29 06:01:40,987 INFO L354 Elim1Store]: treesize reduction 119, result has 14.4 percent of original size [2021-10-29 06:01:40,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 145 treesize of output 137 [2021-10-29 06:01:41,326 INFO L354 Elim1Store]: treesize reduction 336, result has 12.3 percent of original size [2021-10-29 06:01:41,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 150 treesize of output 118 [2021-10-29 06:01:41,386 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-29 06:01:41,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 146 treesize of output 150 [2021-10-29 06:01:41,798 INFO L354 Elim1Store]: treesize reduction 498, result has 9.8 percent of original size [2021-10-29 06:01:41,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 147 treesize of output 103 [2021-10-29 06:01:42,952 INFO L354 Elim1Store]: treesize reduction 256, result has 0.4 percent of original size [2021-10-29 06:01:42,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 135 treesize of output 53 [2021-10-29 06:01:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:42,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:01:43,055 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:43,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-10-29 06:01:45,185 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~item~0.base_30 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.offset_30 (_ BitVec 32))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_30 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_30) v_ULTIMATE.start_main_~item~0.offset_30 (_ bv0 32)) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~item~0.offset_30) v_DerPreprocessor_2)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset) (_ bv0 32))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_30)))))) is different from false [2021-10-29 06:01:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:45,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140323068] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:01:45,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 06:01:45,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 17 [2021-10-29 06:01:45,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11455095] [2021-10-29 06:01:45,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-29 06:01:45,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 06:01:45,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-29 06:01:45,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=142, Unknown=3, NotChecked=78, Total=272 [2021-10-29 06:01:45,234 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:15,681 WARN L207 SmtUtils]: Spent 14.30 s on a formula simplification. DAG size of input: 103 DAG size of output: 50 [2021-10-29 06:02:30,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:02:30,646 INFO L93 Difference]: Finished difference Result 112 states and 138 transitions. [2021-10-29 06:02:30,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 06:02:30,648 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-29 06:02:30,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:02:30,650 INFO L225 Difference]: With dead ends: 112 [2021-10-29 06:02:30,650 INFO L226 Difference]: Without dead ends: 110 [2021-10-29 06:02:30,652 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 30.8s TimeCoverageRelationStatistics Valid=136, Invalid=331, Unknown=7, NotChecked=126, Total=600 [2021-10-29 06:02:30,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-29 06:02:30,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 54. [2021-10-29 06:02:30,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 53 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:30,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2021-10-29 06:02:30,665 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 15 [2021-10-29 06:02:30,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:02:30,666 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2021-10-29 06:02:30,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:30,666 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2021-10-29 06:02:30,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 06:02:30,667 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:02:30,667 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:02:30,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-10-29 06:02:30,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-29 06:02:31,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-29 06:02:31,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:02:31,273 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-29 06:02:31,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:02:31,274 INFO L85 PathProgramCache]: Analyzing trace with hash 438935047, now seen corresponding path program 2 times [2021-10-29 06:02:31,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 06:02:31,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867608860] [2021-10-29 06:02:31,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 06:02:31,274 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 06:02:31,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 06:02:31,275 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 06:02:31,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-29 06:02:31,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 06:02:31,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 06:02:31,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-29 06:02:31,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:02:32,479 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-29 06:02:32,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 148 treesize of output 151 [2021-10-29 06:02:32,667 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-10-29 06:02:32,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 128 [2021-10-29 06:02:32,672 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:32,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-10-29 06:02:32,873 INFO L354 Elim1Store]: treesize reduction 169, result has 9.1 percent of original size [2021-10-29 06:02:32,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 129 treesize of output 112 [2021-10-29 06:02:32,892 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:32,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-29 06:02:33,063 INFO L354 Elim1Store]: treesize reduction 321, result has 9.3 percent of original size [2021-10-29 06:02:33,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 103 treesize of output 85 [2021-10-29 06:02:33,164 INFO L354 Elim1Store]: treesize reduction 132, result has 16.5 percent of original size [2021-10-29 06:02:33,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 66 [2021-10-29 06:02:33,165 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 06:02:33,492 INFO L354 Elim1Store]: treesize reduction 140, result has 15.7 percent of original size [2021-10-29 06:02:33,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 83 [2021-10-29 06:02:33,550 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-10-29 06:02:33,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 78 [2021-10-29 06:02:33,926 INFO L354 Elim1Store]: treesize reduction 106, result has 13.8 percent of original size [2021-10-29 06:02:33,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 59 treesize of output 64 [2021-10-29 06:02:35,436 INFO L354 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2021-10-29 06:02:35,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 43 [2021-10-29 06:02:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 06:02:35,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:02:35,840 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:35,841 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 06:02:37,873 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~item~0.base_32 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.offset_32 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_32)))) (= (select (select (store |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_32 (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_32) v_ULTIMATE.start_main_~item~0.offset_32 v_DerPreprocessor_8) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~item~0.offset_32) (_ bv0 32))) c_ULTIMATE.start_main_~bucket~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~bucket~0.offset)) (_ bv0 32)))) is different from false [2021-10-29 06:02:37,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 06:02:37,937 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 06:02:37,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867608860] [2021-10-29 06:02:37,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867608860] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 06:02:37,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:02:37,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-29 06:02:37,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384107240] [2021-10-29 06:02:37,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 06:02:37,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 06:02:37,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 06:02:37,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=85, Unknown=1, NotChecked=18, Total=132 [2021-10-29 06:02:37,940 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 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) [2021-10-29 06:02:55,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:02:55,771 INFO L93 Difference]: Finished difference Result 118 states and 146 transitions. [2021-10-29 06:02:55,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 06:02:55,772 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 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) Word has length 17 [2021-10-29 06:02:55,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:02:55,773 INFO L225 Difference]: With dead ends: 118 [2021-10-29 06:02:55,774 INFO L226 Difference]: Without dead ends: 84 [2021-10-29 06:02:55,774 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=58, Invalid=155, Unknown=1, NotChecked=26, Total=240 [2021-10-29 06:02:55,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-29 06:02:55,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 61. [2021-10-29 06:02:55,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 60 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:55,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2021-10-29 06:02:55,787 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 17 [2021-10-29 06:02:55,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:02:55,788 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2021-10-29 06:02:55,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 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) [2021-10-29 06:02:55,788 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2021-10-29 06:02:55,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 06:02:55,789 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:02:55,790 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:02:55,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-29 06:02:56,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 06:02:56,006 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-29 06:02:56,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:02:56,007 INFO L85 PathProgramCache]: Analyzing trace with hash -581654046, now seen corresponding path program 1 times [2021-10-29 06:02:56,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 06:02:56,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147861648] [2021-10-29 06:02:56,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:02:56,007 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 06:02:56,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 06:02:56,008 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 06:02:56,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-29 06:02:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:02:56,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-29 06:02:56,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:03:06,556 WARN L207 SmtUtils]: Spent 10.12 s on a formula simplification. DAG size of input: 25 DAG size of output: 9 [2021-10-29 06:03:06,557 INFO L354 Elim1Store]: treesize reduction 47, result has 25.4 percent of original size [2021-10-29 06:03:06,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 239 treesize of output 243 [2021-10-29 06:03:10,281 INFO L354 Elim1Store]: treesize reduction 92, result has 15.6 percent of original size [2021-10-29 06:03:10,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 233 treesize of output 208 [2021-10-29 06:03:13,906 INFO L354 Elim1Store]: treesize reduction 312, result has 9.0 percent of original size [2021-10-29 06:03:13,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 257 treesize of output 187 [2021-10-29 06:03:16,344 INFO L354 Elim1Store]: treesize reduction 330, result has 10.8 percent of original size [2021-10-29 06:03:16,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 299 treesize of output 193 [2021-10-29 06:03:16,354 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:03:16,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 261 [2021-10-29 06:03:16,361 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:03:16,362 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 266 [2021-10-29 06:03:16,363 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 06:03:16,968 INFO L354 Elim1Store]: treesize reduction 1834, result has 4.4 percent of original size [2021-10-29 06:03:16,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 266 treesize of output 231 [2021-10-29 06:03:17,441 INFO L354 Elim1Store]: treesize reduction 336, result has 12.3 percent of original size [2021-10-29 06:03:17,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 234 treesize of output 174 [2021-10-29 06:03:17,656 INFO L354 Elim1Store]: treesize reduction 504, result has 12.3 percent of original size [2021-10-29 06:03:17,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 230 treesize of output 244 [2021-10-29 06:03:17,722 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-29 06:03:17,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 226 treesize of output 230 [2021-10-29 06:03:18,545 INFO L354 Elim1Store]: treesize reduction 498, result has 9.8 percent of original size [2021-10-29 06:03:18,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 247 treesize of output 175 [2021-10-29 06:03:18,808 INFO L354 Elim1Store]: treesize reduction 690, result has 10.2 percent of original size [2021-10-29 06:03:18,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 228 treesize of output 230 [2021-10-29 06:03:20,647 INFO L354 Elim1Store]: treesize reduction 376, result has 0.3 percent of original size [2021-10-29 06:03:20,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 223 treesize of output 163 [2021-10-29 06:03:22,146 INFO L354 Elim1Store]: treesize reduction 256, result has 0.4 percent of original size [2021-10-29 06:03:22,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 143 treesize of output 53 [2021-10-29 06:03:22,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:03:22,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:03:22,407 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:03:22,408 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-29 06:03:22,412 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:03:22,413 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-10-29 06:03:26,621 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~item~0.base_34 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.offset_34 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_34))))))))) (not (= (let ((.cse1 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~item~0.offset_34))) (select (let ((.cse0 (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_34 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_34) v_ULTIMATE.start_main_~item~0.offset_34 (_ bv0 32)) .cse1 v_DerPreprocessor_11)))) (select .cse0 (select (select .cse0 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset))) (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_34 (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_34) v_ULTIMATE.start_main_~item~0.offset_34 (_ bv0 32)) .cse1 v_DerPreprocessor_12)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset))) (_ bv0 32))))) is different from false [2021-10-29 06:03:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:03:26,686 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 06:03:26,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147861648] [2021-10-29 06:03:26,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147861648] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:03:26,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [308844227] [2021-10-29 06:03:26,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:03:26,687 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 06:03:26,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 06:03:26,690 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 06:03:26,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-29 06:03:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:03:27,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-29 06:03:27,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:03:27,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:03:27,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:03:27,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 223 treesize of output 198 [2021-10-29 06:03:30,268 INFO L354 Elim1Store]: treesize reduction 47, result has 25.4 percent of original size [2021-10-29 06:03:30,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 201 treesize of output 205 [2021-10-29 06:03:30,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:03:30,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:03:30,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 171 [2021-10-29 06:03:30,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:03:30,626 INFO L354 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2021-10-29 06:03:30,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 208 treesize of output 154 [2021-10-29 06:03:30,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:03:30,937 INFO L354 Elim1Store]: treesize reduction 82, result has 27.4 percent of original size [2021-10-29 06:03:30,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 254 treesize of output 160 [2021-10-29 06:03:30,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:03:31,002 INFO L354 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2021-10-29 06:03:31,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 254 treesize of output 205 [2021-10-29 06:03:31,003 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 06:03:31,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:03:31,105 INFO L354 Elim1Store]: treesize reduction 178, result has 18.0 percent of original size [2021-10-29 06:03:31,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 199 treesize of output 211 [2021-10-29 06:03:31,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:03:31,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:03:31,555 INFO L354 Elim1Store]: treesize reduction 96, result has 18.6 percent of original size [2021-10-29 06:03:31,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 18 case distinctions, treesize of input 210 treesize of output 166 [2021-10-29 06:03:31,602 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-10-29 06:03:31,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 206 treesize of output 202 [2021-10-29 06:03:31,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:03:31,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:03:31,685 INFO L354 Elim1Store]: treesize reduction 180, result has 15.9 percent of original size [2021-10-29 06:03:31,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 177 treesize of output 191 [2021-10-29 06:03:32,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:03:32,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:03:32,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:03:32,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:03:32,248 INFO L354 Elim1Store]: treesize reduction 108, result has 12.2 percent of original size [2021-10-29 06:03:32,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 20 case distinctions, treesize of input 207 treesize of output 155 [2021-10-29 06:03:32,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:03:32,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:03:32,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:03:32,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:03:32,322 INFO L354 Elim1Store]: treesize reduction 204, result has 11.7 percent of original size [2021-10-29 06:03:32,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 188 treesize of output 190 [2021-10-29 06:03:32,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 06:03:34,047 INFO L354 Elim1Store]: treesize reduction 132, result has 0.8 percent of original size [2021-10-29 06:03:34,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 176 treesize of output 120 [2021-10-29 06:03:34,796 INFO L354 Elim1Store]: treesize reduction 60, result has 17.8 percent of original size [2021-10-29 06:03:34,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 125 treesize of output 67 [2021-10-29 06:03:35,033 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-10-29 06:03:35,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 26 [2021-10-29 06:03:35,162 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:03:35,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:03:38,403 INFO L354 Elim1Store]: treesize reduction 6, result has 71.4 percent of original size [2021-10-29 06:03:38,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 142 [2021-10-29 06:03:38,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:03:38,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-29 06:03:38,427 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:03:38,429 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-10-29 06:03:45,272 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.base_36 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32))) (let ((.cse2 (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_36 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_36) (_ bv0 32) (_ bv0 32)) (_ bv4 32) v_DerPreprocessor_13)))) (let ((.cse1 (select (select .cse2 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset)) (.cse0 (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_36 (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_36) (_ bv0 32) (_ bv0 32)) (_ bv4 32) v_DerPreprocessor_14)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset))) (or (and (= (bvadd (_ bv4 32) .cse0) (_ bv0 32)) (= .cse1 v_ULTIMATE.start_main_~item~0.base_36)) (and (= .cse1 (_ bv0 32)) (= .cse0 (_ bv0 32))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_36))))) (not (= (_ bv0 32) (select (select .cse2 .cse1) .cse0))))))) is different from false [2021-10-29 06:03:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:03:45,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [308844227] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:03:45,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594418327] [2021-10-29 06:03:45,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:03:45,363 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:03:45,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:03:45,364 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:03:45,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-29 06:03:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:03:45,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-29 06:03:45,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:03:49,175 INFO L354 Elim1Store]: treesize reduction 92, result has 15.6 percent of original size [2021-10-29 06:03:49,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 237 treesize of output 212 [2021-10-29 06:03:52,742 INFO L354 Elim1Store]: treesize reduction 312, result has 9.0 percent of original size [2021-10-29 06:03:52,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 261 treesize of output 191 [2021-10-29 06:03:54,881 INFO L354 Elim1Store]: treesize reduction 330, result has 10.8 percent of original size [2021-10-29 06:03:54,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 295 treesize of output 197 [2021-10-29 06:03:54,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:03:54,888 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 257 [2021-10-29 06:03:54,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:03:54,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-10-29 06:03:55,410 INFO L354 Elim1Store]: treesize reduction 1834, result has 4.4 percent of original size [2021-10-29 06:03:55,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 262 treesize of output 227 [2021-10-29 06:03:55,413 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 06:03:55,475 INFO L354 Elim1Store]: treesize reduction 119, result has 14.4 percent of original size [2021-10-29 06:03:55,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 222 treesize of output 214 [2021-10-29 06:03:55,932 INFO L354 Elim1Store]: treesize reduction 336, result has 12.3 percent of original size [2021-10-29 06:03:55,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 236 treesize of output 176 [2021-10-29 06:03:56,123 INFO L354 Elim1Store]: treesize reduction 504, result has 12.3 percent of original size [2021-10-29 06:03:56,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 232 treesize of output 246 [2021-10-29 06:03:56,199 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-29 06:03:56,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 228 treesize of output 232 [2021-10-29 06:03:56,885 INFO L354 Elim1Store]: treesize reduction 498, result has 9.8 percent of original size [2021-10-29 06:03:56,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 247 treesize of output 175 [2021-10-29 06:03:57,133 INFO L354 Elim1Store]: treesize reduction 690, result has 10.2 percent of original size [2021-10-29 06:03:57,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 228 treesize of output 230 [2021-10-29 06:03:58,693 INFO L354 Elim1Store]: treesize reduction 376, result has 0.3 percent of original size [2021-10-29 06:03:58,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 223 treesize of output 163 [2021-10-29 06:04:00,051 INFO L354 Elim1Store]: treesize reduction 256, result has 0.4 percent of original size [2021-10-29 06:04:00,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 143 treesize of output 53 [2021-10-29 06:04:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:04:00,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:04:00,152 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:04:00,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-29 06:04:00,172 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:04:00,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-10-29 06:04:04,355 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~item~0.offset_38 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.base_38 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_38)))) (not (= (let ((.cse1 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~item~0.offset_38))) (select (let ((.cse0 (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_38 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_38) v_ULTIMATE.start_main_~item~0.offset_38 (_ bv0 32)) .cse1 v_DerPreprocessor_11)))) (select .cse0 (select (select .cse0 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset))) (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_38 (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_38) v_ULTIMATE.start_main_~item~0.offset_38 (_ bv0 32)) .cse1 v_DerPreprocessor_12)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset))) (_ bv0 32))))) is different from false [2021-10-29 06:04:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:04:04,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594418327] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:04:04,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 06:04:04,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11, 11, 8, 8] total 31 [2021-10-29 06:04:04,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487351252] [2021-10-29 06:04:04,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-29 06:04:04,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 06:04:04,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-29 06:04:04,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=644, Unknown=10, NotChecked=162, Total=930 [2021-10-29 06:04:04,413 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 31 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:04:18,565 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse13 (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~bucket~0.base))) (let ((.cse5 (select .cse13 c_ULTIMATE.start_main_~bucket~0.offset))) (let ((.cse9 (select |c_#memory_$Pointer$.base| .cse5))) (let ((.cse0 (select .cse9 (_ bv0 32)))) (let ((.cse1 (select |c_#memory_$Pointer$.base| .cse0)) (.cse2 (select |c_#memory_$Pointer$.offset| .cse0)) (.cse10 (select |c_#memory_$Pointer$.offset| .cse5)) (.cse17 (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~bucket~0.base)) (.cse14 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~bucket~0.offset))) (and (not (= .cse0 (_ bv0 32))) (= (select .cse1 (_ bv4 32)) (_ bv0 32)) (= c_ULTIMATE.start_main_~bucket~0.offset (_ bv0 32)) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| .cse0))) (= (select .cse2 (_ bv4 32)) (_ bv0 32)) (forall ((v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (not (= (let ((.cse4 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~item~0.offset))) (select (let ((.cse3 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~item~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~item~0.base) .cse4 v_DerPreprocessor_11)))) (select .cse3 (select (select .cse3 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset))) (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~item~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~item~0.base) .cse4 v_DerPreprocessor_12)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset))) (_ bv0 32)))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| .cse5)) (_ bv1 1))) (not (= .cse0 c_ULTIMATE.start_main_~bucket~0.base)) (forall ((v_DerPreprocessor_13 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.base_36 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32))) (let ((.cse8 (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_36 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_36) (_ bv0 32) (_ bv0 32)) (_ bv4 32) v_DerPreprocessor_13)))) (let ((.cse7 (select (select .cse8 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset)) (.cse6 (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_36 (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_36) (_ bv0 32) (_ bv0 32)) (_ bv4 32) v_DerPreprocessor_14)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset))) (or (and (= (bvadd (_ bv4 32) .cse6) (_ bv0 32)) (= .cse7 v_ULTIMATE.start_main_~item~0.base_36)) (and (= .cse7 (_ bv0 32)) (= .cse6 (_ bv0 32))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_36))))) (not (= (_ bv0 32) (select (select .cse8 .cse7) .cse6))))))) (= (select .cse9 (_ bv4 32)) (_ bv0 32)) (= (select .cse1 (_ bv0 32)) (_ bv0 32)) (= (select .cse2 (_ bv0 32)) (_ bv0 32)) (not (= c_ULTIMATE.start_main_~bcki~0.base (_ bv0 32))) (= (select .cse10 (_ bv4 32)) (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_ULTIMATE.start_main_~bucket~0.base)) (_ bv1 1))) (= (select .cse10 (_ bv0 32)) (_ bv0 32)) (forall ((v_ULTIMATE.start_main_~item~0.offset_38 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.base_38 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_38)))) (not (= (let ((.cse12 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~item~0.offset_38))) (select (let ((.cse11 (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_38 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_38) v_ULTIMATE.start_main_~item~0.offset_38 (_ bv0 32)) .cse12 v_DerPreprocessor_11)))) (select .cse11 (select (select .cse11 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset))) (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_38 (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_38) v_ULTIMATE.start_main_~item~0.offset_38 (_ bv0 32)) .cse12 v_DerPreprocessor_12)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset))) (_ bv0 32))))) (= (select .cse13 .cse14) (_ bv0 32)) (forall ((v_ULTIMATE.start_main_~item~0.base_34 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.offset_34 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_34))))))))) (not (= (let ((.cse16 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~item~0.offset_34))) (select (let ((.cse15 (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_34 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_34) v_ULTIMATE.start_main_~item~0.offset_34 (_ bv0 32)) .cse16 v_DerPreprocessor_11)))) (select .cse15 (select (select .cse15 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset))) (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_34 (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_34) v_ULTIMATE.start_main_~item~0.offset_34 (_ bv0 32)) .cse16 v_DerPreprocessor_12)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset))) (_ bv0 32))))) (= (select .cse17 c_ULTIMATE.start_main_~bucket~0.offset) (_ bv0 32)) (= (select .cse17 .cse14) (_ bv0 32)))))))) is different from false [2021-10-29 06:04:56,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:04:56,158 INFO L93 Difference]: Finished difference Result 158 states and 201 transitions. [2021-10-29 06:04:56,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-29 06:04:56,159 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 31 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-29 06:04:56,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:04:56,161 INFO L225 Difference]: With dead ends: 158 [2021-10-29 06:04:56,161 INFO L226 Difference]: Without dead ends: 156 [2021-10-29 06:04:56,164 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 35.2s TimeCoverageRelationStatistics Valid=508, Invalid=2124, Unknown=36, NotChecked=412, Total=3080 [2021-10-29 06:04:56,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-29 06:04:56,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 63. [2021-10-29 06:04:56,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 62 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:04:56,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2021-10-29 06:04:56,180 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 18 [2021-10-29 06:04:56,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:04:56,181 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2021-10-29 06:04:56,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 31 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:04:56,181 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2021-10-29 06:04:56,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-29 06:04:56,183 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:04:56,183 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:04:56,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-29 06:04:56,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-29 06:04:56,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-29 06:04:56,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 06:04:56,798 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-29 06:04:56,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:04:56,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1938687340, now seen corresponding path program 1 times [2021-10-29 06:04:56,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 06:04:56,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150537067] [2021-10-29 06:04:56,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:04:56,799 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 06:04:56,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 06:04:56,801 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 06:04:56,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-29 06:04:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:04:57,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-29 06:04:57,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:05:00,857 INFO L354 Elim1Store]: treesize reduction 92, result has 15.6 percent of original size [2021-10-29 06:05:00,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 208 treesize of output 183 [2021-10-29 06:05:02,016 INFO L354 Elim1Store]: treesize reduction 92, result has 15.6 percent of original size [2021-10-29 06:05:02,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 183 treesize of output 158 [2021-10-29 06:05:02,585 INFO L354 Elim1Store]: treesize reduction 224, result has 7.1 percent of original size [2021-10-29 06:05:02,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 191 treesize of output 141 [2021-10-29 06:05:02,965 INFO L354 Elim1Store]: treesize reduction 216, result has 12.6 percent of original size [2021-10-29 06:05:02,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 213 treesize of output 147 [2021-10-29 06:05:03,088 INFO L354 Elim1Store]: treesize reduction 344, result has 4.7 percent of original size [2021-10-29 06:05:03,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 213 treesize of output 164 [2021-10-29 06:05:03,228 INFO L354 Elim1Store]: treesize reduction 368, result has 9.6 percent of original size [2021-10-29 06:05:03,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 158 treesize of output 170 [2021-10-29 06:05:03,229 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 06:05:03,237 INFO L354 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2021-10-29 06:05:03,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 181 treesize of output 165 [2021-10-29 06:05:03,924 INFO L354 Elim1Store]: treesize reduction 262, result has 12.1 percent of original size [2021-10-29 06:05:03,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 20 case distinctions, treesize of input 181 treesize of output 132 [2021-10-29 06:05:04,065 INFO L354 Elim1Store]: treesize reduction 406, result has 12.9 percent of original size [2021-10-29 06:05:04,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 168 treesize of output 173 [2021-10-29 06:05:05,029 INFO L354 Elim1Store]: treesize reduction 311, result has 10.9 percent of original size [2021-10-29 06:05:05,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 195 treesize of output 144 [2021-10-29 06:05:05,172 INFO L354 Elim1Store]: treesize reduction 343, result has 11.8 percent of original size [2021-10-29 06:05:05,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 140 treesize of output 143 [2021-10-29 06:05:06,340 INFO L354 Elim1Store]: treesize reduction 304, result has 2.3 percent of original size [2021-10-29 06:05:06,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 28 case distinctions, treesize of input 221 treesize of output 117 [2021-10-29 06:05:06,442 INFO L354 Elim1Store]: treesize reduction 268, result has 2.5 percent of original size [2021-10-29 06:05:06,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 77 treesize of output 51 [2021-10-29 06:05:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:05:06,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:05:18,097 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:05:18,097 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 06:05:18,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150537067] [2021-10-29 06:05:18,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150537067] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:05:18,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [29115286] [2021-10-29 06:05:18,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:05:18,097 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 06:05:18,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 06:05:18,098 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 06:05:18,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-29 06:05:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:05:18,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-29 06:05:18,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:05:19,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:05:19,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:05:19,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 184 [2021-10-29 06:05:19,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:05:19,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:05:19,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 159 [2021-10-29 06:05:19,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:05:19,295 INFO L354 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2021-10-29 06:05:19,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 192 treesize of output 142 [2021-10-29 06:05:19,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:05:19,564 INFO L354 Elim1Store]: treesize reduction 82, result has 27.4 percent of original size [2021-10-29 06:05:19,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 214 treesize of output 148 [2021-10-29 06:05:19,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:05:19,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-10-29 06:05:19,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:05:19,682 INFO L354 Elim1Store]: treesize reduction 224, result has 14.8 percent of original size [2021-10-29 06:05:19,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 5 case distinctions, treesize of input 178 treesize of output 180 [2021-10-29 06:05:19,692 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 06:05:19,699 INFO L354 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2021-10-29 06:05:19,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 166 [2021-10-29 06:05:20,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:05:20,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:05:20,349 INFO L354 Elim1Store]: treesize reduction 164, result has 14.1 percent of original size [2021-10-29 06:05:20,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 169 treesize of output 183 [2021-10-29 06:05:20,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:05:20,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:05:20,413 INFO L354 Elim1Store]: treesize reduction 80, result has 15.8 percent of original size [2021-10-29 06:05:20,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 17 case distinctions, treesize of input 165 treesize of output 129 [2021-10-29 06:05:21,416 INFO L354 Elim1Store]: treesize reduction 347, result has 13.9 percent of original size [2021-10-29 06:05:21,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 183 treesize of output 182 [2021-10-29 06:05:21,555 INFO L354 Elim1Store]: treesize reduction 223, result has 13.9 percent of original size [2021-10-29 06:05:21,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 164 treesize of output 121 [2021-10-29 06:05:22,620 INFO L354 Elim1Store]: treesize reduction 214, result has 4.9 percent of original size [2021-10-29 06:05:22,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 28 case distinctions, treesize of input 209 treesize of output 115 [2021-10-29 06:05:22,697 INFO L354 Elim1Store]: treesize reduction 182, result has 3.7 percent of original size [2021-10-29 06:05:22,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 75 treesize of output 51 [2021-10-29 06:05:22,733 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:05:22,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:05:23,141 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:05:23,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [29115286] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:05:23,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952871883] [2021-10-29 06:05:23,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:05:23,141 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:05:23,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:05:23,143 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:05:23,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-29 06:05:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:05:23,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-29 06:05:23,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:05:27,501 INFO L354 Elim1Store]: treesize reduction 92, result has 15.6 percent of original size [2021-10-29 06:05:27,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 207 treesize of output 182 [2021-10-29 06:05:29,490 INFO L354 Elim1Store]: treesize reduction 224, result has 7.1 percent of original size [2021-10-29 06:05:29,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 227 treesize of output 165 [2021-10-29 06:05:30,936 INFO L354 Elim1Store]: treesize reduction 216, result has 12.6 percent of original size [2021-10-29 06:05:30,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 249 treesize of output 171 [2021-10-29 06:05:30,941 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:05:30,942 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 254 [2021-10-29 06:05:31,107 INFO L354 Elim1Store]: treesize reduction 615, result has 4.4 percent of original size [2021-10-29 06:05:31,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 254 treesize of output 168 [2021-10-29 06:05:31,242 INFO L354 Elim1Store]: treesize reduction 368, result has 9.6 percent of original size [2021-10-29 06:05:31,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 157 treesize of output 169 [2021-10-29 06:05:31,243 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 06:05:31,251 INFO L354 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2021-10-29 06:05:31,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 180 treesize of output 164 [2021-10-29 06:05:31,794 INFO L354 Elim1Store]: treesize reduction 262, result has 12.1 percent of original size [2021-10-29 06:05:31,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 20 case distinctions, treesize of input 181 treesize of output 132 [2021-10-29 06:05:31,952 INFO L354 Elim1Store]: treesize reduction 406, result has 12.9 percent of original size [2021-10-29 06:05:31,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 168 treesize of output 173 [2021-10-29 06:05:32,732 INFO L354 Elim1Store]: treesize reduction 311, result has 10.9 percent of original size [2021-10-29 06:05:32,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 195 treesize of output 144 [2021-10-29 06:05:32,874 INFO L354 Elim1Store]: treesize reduction 343, result has 11.8 percent of original size [2021-10-29 06:05:32,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 140 treesize of output 143 [2021-10-29 06:05:33,812 INFO L354 Elim1Store]: treesize reduction 304, result has 2.3 percent of original size [2021-10-29 06:05:33,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 28 case distinctions, treesize of input 221 treesize of output 117 [2021-10-29 06:05:33,909 INFO L354 Elim1Store]: treesize reduction 268, result has 2.5 percent of original size [2021-10-29 06:05:33,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 77 treesize of output 51 [2021-10-29 06:05:33,927 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:05:33,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:05:34,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:05:34,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952871883] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:05:34,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 06:05:34,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7, 9, 7, 9] total 17 [2021-10-29 06:05:34,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171426525] [2021-10-29 06:05:34,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-29 06:05:34,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 06:05:34,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-29 06:05:34,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-10-29 06:05:34,488 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 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) [2021-10-29 06:06:18,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:06:18,138 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2021-10-29 06:06:18,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 06:06:18,140 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-29 06:06:18,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:06:18,140 INFO L225 Difference]: With dead ends: 80 [2021-10-29 06:06:18,140 INFO L226 Difference]: Without dead ends: 69 [2021-10-29 06:06:18,141 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-10-29 06:06:18,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-29 06:06:18,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-10-29 06:06:18,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 67 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:06:18,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2021-10-29 06:06:18,160 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 19 [2021-10-29 06:06:18,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:06:18,160 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2021-10-29 06:06:18,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 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) [2021-10-29 06:06:18,161 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2021-10-29 06:06:18,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 06:06:18,162 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:06:18,162 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:06:18,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-29 06:06:18,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-10-29 06:06:18,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-29 06:06:18,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:06:18,779 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-29 06:06:18,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:06:18,779 INFO L85 PathProgramCache]: Analyzing trace with hash -622338137, now seen corresponding path program 2 times [2021-10-29 06:06:18,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 06:06:18,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005941866] [2021-10-29 06:06:18,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 06:06:18,780 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 06:06:18,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 06:06:18,782 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 06:06:18,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-29 06:06:19,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 06:06:19,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 06:06:19,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-29 06:06:19,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:06:19,730 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:06:19,731 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 320 [2021-10-29 06:06:19,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:06:19,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:06:19,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:06:41,583 WARN L207 SmtUtils]: Spent 21.84 s on a formula simplification. DAG size of input: 66 DAG size of output: 23 [2021-10-29 06:06:41,584 INFO L354 Elim1Store]: treesize reduction 228, result has 14.3 percent of original size [2021-10-29 06:06:41,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 320 treesize of output 258 [2021-10-29 06:06:41,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:06:41,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:06:56,654 WARN L207 SmtUtils]: Spent 15.06 s on a formula simplification. DAG size of input: 82 DAG size of output: 28 [2021-10-29 06:06:56,655 INFO L354 Elim1Store]: treesize reduction 284, result has 12.3 percent of original size [2021-10-29 06:06:56,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 425 treesize of output 263 [2021-10-29 06:06:56,662 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:06:56,664 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 430 [2021-10-29 06:06:56,669 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:06:56,670 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 412 [2021-10-29 06:07:00,040 INFO L354 Elim1Store]: treesize reduction 486, result has 9.5 percent of original size [2021-10-29 06:07:00,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 412 treesize of output 370 [2021-10-29 06:07:00,046 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:07:00,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 310 [2021-10-29 06:07:00,048 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 06:07:00,052 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:07:00,053 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 315 [2021-10-29 06:07:00,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:07:00,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:07:00,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:07:00,601 INFO L354 Elim1Store]: treesize reduction 1283, result has 6.1 percent of original size [2021-10-29 06:07:00,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 315 treesize of output 280 [2021-10-29 06:07:00,671 INFO L354 Elim1Store]: treesize reduction 132, result has 18.0 percent of original size [2021-10-29 06:07:00,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 252 treesize of output 219 [2021-10-29 06:07:00,743 INFO L354 Elim1Store]: treesize reduction 119, result has 14.4 percent of original size [2021-10-29 06:07:00,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 236 treesize of output 228 [2021-10-29 06:07:01,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:07:01,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:07:01,439 INFO L354 Elim1Store]: treesize reduction 290, result has 13.9 percent of original size [2021-10-29 06:07:01,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 259 treesize of output 199 [2021-10-29 06:07:01,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:07:01,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:07:01,713 INFO L354 Elim1Store]: treesize reduction 450, result has 13.6 percent of original size [2021-10-29 06:07:01,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 255 treesize of output 269 [2021-10-29 06:07:01,799 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-29 06:07:01,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 251 treesize of output 255 [2021-10-29 06:07:01,882 INFO L354 Elim1Store]: treesize reduction 124, result has 19.0 percent of original size [2021-10-29 06:07:01,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 232 treesize of output 223 [2021-10-29 06:07:01,886 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 06:07:02,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:07:02,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:07:02,879 INFO L354 Elim1Store]: treesize reduction 352, result has 9.7 percent of original size [2021-10-29 06:07:02,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 264 treesize of output 192 [2021-10-29 06:07:02,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:07:02,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:07:03,101 INFO L354 Elim1Store]: treesize reduction 536, result has 10.4 percent of original size [2021-10-29 06:07:03,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 23 case distinctions, treesize of input 245 treesize of output 247 [2021-10-29 06:07:03,188 INFO L354 Elim1Store]: treesize reduction 124, result has 19.0 percent of original size [2021-10-29 06:07:03,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 226 treesize of output 228 [2021-10-29 06:07:05,664 INFO L354 Elim1Store]: treesize reduction 201, result has 2.0 percent of original size [2021-10-29 06:07:05,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 227 treesize of output 123 [2021-10-29 06:07:05,764 INFO L354 Elim1Store]: treesize reduction 204, result has 0.5 percent of original size [2021-10-29 06:07:05,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 99 treesize of output 65 [2021-10-29 06:07:05,987 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-10-29 06:07:05,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 28 [2021-10-29 06:07:06,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 06:07:06,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:07:06,437 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:07:06,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-29 06:07:06,440 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:07:06,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-29 06:07:08,782 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:07:08,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-29 06:07:10,840 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~item~0.base_58 (_ BitVec 32)) (v_DerPreprocessor_28 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.offset_58 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32))) (or (= (let ((.cse0 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~item~0.offset_58))) (select (select (store |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_58 (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_58) v_ULTIMATE.start_main_~item~0.offset_58 v_DerPreprocessor_28) .cse0 (_ bv1 32))) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_58 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_58) v_ULTIMATE.start_main_~item~0.offset_58 (_ bv0 32)) .cse0 v_DerPreprocessor_26)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset)) (bvadd (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_58 (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_58) v_ULTIMATE.start_main_~item~0.offset_58 (_ bv0 32)) .cse0 v_DerPreprocessor_27)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset) (_ bv8 32)))) (_ bv1 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_58))))))) is different from false [2021-10-29 06:07:10,917 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 06:07:10,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 06:07:10,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005941866] [2021-10-29 06:07:10,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005941866] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:07:10,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [731386926] [2021-10-29 06:07:10,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 06:07:10,918 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 06:07:10,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 06:07:10,919 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 06:07:10,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-10-29 06:07:11,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 06:07:11,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 06:07:12,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-29 06:07:12,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:07:12,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:07:12,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:07:12,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 286 treesize of output 261 [2021-10-29 06:07:12,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:07:17,908 WARN L207 SmtUtils]: Spent 5.84 s on a formula simplification. DAG size of input: 24 DAG size of output: 13 [2021-10-29 06:07:17,908 INFO L354 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2021-10-29 06:07:17,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 334 treesize of output 244 [2021-10-29 06:07:17,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:07:25,649 WARN L207 SmtUtils]: Spent 7.73 s on a formula simplification. DAG size of input: 45 DAG size of output: 22 [2021-10-29 06:07:25,650 INFO L354 Elim1Store]: treesize reduction 82, result has 27.4 percent of original size [2021-10-29 06:07:25,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 412 treesize of output 250 [2021-10-29 06:07:25,656 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:07:25,658 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 376 [2021-10-29 06:07:25,669 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:07:25,671 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 381 [2021-10-29 06:07:25,676 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:07:25,677 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 363 [2021-10-29 06:07:26,506 INFO L354 Elim1Store]: treesize reduction 144, result has 19.1 percent of original size [2021-10-29 06:07:26,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 363 treesize of output 337 [2021-10-29 06:07:26,513 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 06:07:27,348 INFO L354 Elim1Store]: treesize reduction 119, result has 14.4 percent of original size [2021-10-29 06:07:27,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 323 treesize of output 315 [2021-10-29 06:07:27,357 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:07:27,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 269 [2021-10-29 06:07:27,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:07:27,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-10-29 06:07:27,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:07:27,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:07:27,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:07:27,501 INFO L354 Elim1Store]: treesize reduction 268, result has 15.7 percent of original size [2021-10-29 06:07:27,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 274 treesize of output 239 [2021-10-29 06:07:27,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:07:27,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:07:28,232 INFO L354 Elim1Store]: treesize reduction 318, result has 17.8 percent of original size [2021-10-29 06:07:28,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 235 treesize of output 249 [2021-10-29 06:07:28,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:07:28,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:07:28,456 INFO L354 Elim1Store]: treesize reduction 198, result has 18.5 percent of original size [2021-10-29 06:07:28,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 231 treesize of output 183 [2021-10-29 06:07:28,518 INFO L354 Elim1Store]: treesize reduction 112, result has 19.4 percent of original size [2021-10-29 06:07:28,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 227 treesize of output 218 [2021-10-29 06:07:28,576 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-29 06:07:28,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 212 treesize of output 216 [2021-10-29 06:07:28,585 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 06:07:29,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:07:29,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:07:29,411 INFO L354 Elim1Store]: treesize reduction 258, result has 12.2 percent of original size [2021-10-29 06:07:29,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 242 treesize of output 182 [2021-10-29 06:07:29,481 INFO L354 Elim1Store]: treesize reduction 112, result has 19.4 percent of original size [2021-10-29 06:07:29,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 223 treesize of output 225 [2021-10-29 06:07:29,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:07:29,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:07:29,645 INFO L354 Elim1Store]: treesize reduction 402, result has 13.0 percent of original size [2021-10-29 06:07:29,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 23 case distinctions, treesize of input 219 treesize of output 221 [2021-10-29 06:07:32,153 INFO L354 Elim1Store]: treesize reduction 117, result has 3.3 percent of original size [2021-10-29 06:07:32,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 205 treesize of output 115 [2021-10-29 06:07:32,195 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-10-29 06:07:32,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 91 treesize of output 59 [2021-10-29 06:07:32,416 INFO L354 Elim1Store]: treesize reduction 33, result has 10.8 percent of original size [2021-10-29 06:07:32,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 28 [2021-10-29 06:07:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 06:07:32,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:07:32,549 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:07:32,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-29 06:07:32,553 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:07:32,553 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-29 06:07:32,873 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:07:32,874 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-10-29 06:07:34,927 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~item~0.base_60 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.offset_60 (_ BitVec 32)) (v_DerPreprocessor_36 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32))) (or (= (let ((.cse0 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~item~0.offset_60))) (select (select (store |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_60 (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_60) v_ULTIMATE.start_main_~item~0.offset_60 v_DerPreprocessor_36) .cse0 (_ bv1 32))) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_60 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_60) v_ULTIMATE.start_main_~item~0.offset_60 (_ bv0 32)) .cse0 v_DerPreprocessor_26)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset)) (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_60 (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_60) v_ULTIMATE.start_main_~item~0.offset_60 (_ bv0 32)) .cse0 v_DerPreprocessor_27)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset)))) (_ bv1 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_60)))))) is different from false [2021-10-29 06:07:35,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 06:07:35,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [731386926] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:07:35,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667773723] [2021-10-29 06:07:35,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 06:07:35,022 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:07:35,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:07:35,027 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:07:35,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-29 06:07:43,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 06:07:43,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 06:07:43,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-29 06:07:43,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:08:08,195 WARN L207 SmtUtils]: Spent 24.82 s on a formula simplification. DAG size of input: 34 DAG size of output: 13 [2021-10-29 06:08:08,195 INFO L354 Elim1Store]: treesize reduction 92, result has 15.6 percent of original size [2021-10-29 06:08:08,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 287 treesize of output 262 [2021-10-29 06:08:23,083 WARN L207 SmtUtils]: Spent 14.88 s on a formula simplification. DAG size of input: 59 DAG size of output: 13 [2021-10-29 06:08:23,084 INFO L354 Elim1Store]: treesize reduction 224, result has 7.1 percent of original size [2021-10-29 06:08:23,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 335 treesize of output 245 [2021-10-29 06:08:34,317 WARN L207 SmtUtils]: Spent 11.23 s on a formula simplification. DAG size of input: 67 DAG size of output: 22 [2021-10-29 06:08:34,317 INFO L354 Elim1Store]: treesize reduction 216, result has 12.6 percent of original size [2021-10-29 06:08:34,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 413 treesize of output 251 [2021-10-29 06:08:40,255 WARN L207 SmtUtils]: Spent 5.92 s on a formula simplification. DAG size of input: 30 DAG size of output: 12 [2021-10-29 06:08:40,256 INFO L354 Elim1Store]: treesize reduction 119, result has 14.4 percent of original size [2021-10-29 06:08:40,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 436 treesize of output 428 [2021-10-29 06:08:40,265 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:08:40,266 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 422 [2021-10-29 06:08:41,820 INFO L354 Elim1Store]: treesize reduction 615, result has 4.4 percent of original size [2021-10-29 06:08:41,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 422 treesize of output 336 [2021-10-29 06:08:41,821 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 06:08:41,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 325 treesize of output 306 [2021-10-29 06:08:41,832 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:08:41,833 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 270 [2021-10-29 06:08:41,837 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:08:41,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 275 [2021-10-29 06:08:41,896 INFO L354 Elim1Store]: treesize reduction 100, result has 18.7 percent of original size [2021-10-29 06:08:41,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 275 treesize of output 242 [2021-10-29 06:08:42,057 INFO L354 Elim1Store]: treesize reduction 368, result has 9.6 percent of original size [2021-10-29 06:08:42,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 213 treesize of output 225 [2021-10-29 06:08:42,925 INFO L354 Elim1Store]: treesize reduction 280, result has 13.8 percent of original size [2021-10-29 06:08:42,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 245 treesize of output 193 [2021-10-29 06:08:43,249 INFO L354 Elim1Store]: treesize reduction 424, result has 14.0 percent of original size [2021-10-29 06:08:43,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 241 treesize of output 255 [2021-10-29 06:08:43,351 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-29 06:08:43,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 237 treesize of output 241 [2021-10-29 06:08:43,435 INFO L354 Elim1Store]: treesize reduction 112, result has 19.4 percent of original size [2021-10-29 06:08:43,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 218 treesize of output 209 [2021-10-29 06:08:43,437 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 06:08:44,685 INFO L354 Elim1Store]: treesize reduction 340, result has 9.6 percent of original size [2021-10-29 06:08:44,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 24 case distinctions, treesize of input 250 treesize of output 186 [2021-10-29 06:08:44,919 INFO L354 Elim1Store]: treesize reduction 508, result has 10.6 percent of original size [2021-10-29 06:08:44,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 24 case distinctions, treesize of input 231 treesize of output 233 [2021-10-29 06:08:44,998 INFO L354 Elim1Store]: treesize reduction 112, result has 19.4 percent of original size [2021-10-29 06:08:44,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 212 treesize of output 214 [2021-10-29 06:08:48,077 INFO L354 Elim1Store]: treesize reduction 204, result has 0.5 percent of original size [2021-10-29 06:08:48,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 217 treesize of output 117 [2021-10-29 06:08:48,146 INFO L354 Elim1Store]: treesize reduction 204, result has 0.5 percent of original size [2021-10-29 06:08:48,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 93 treesize of output 59 [2021-10-29 06:08:48,360 INFO L354 Elim1Store]: treesize reduction 33, result has 10.8 percent of original size [2021-10-29 06:08:48,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 28 [2021-10-29 06:08:48,389 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 06:08:48,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:08:48,497 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:08:48,498 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-29 06:08:48,501 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:08:48,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-29 06:08:48,864 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:08:48,865 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-10-29 06:08:50,927 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~item~0.base_62 (_ BitVec 32)) (v_DerPreprocessor_42 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.offset_62 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_62)))) (= (_ bv1 32) (let ((.cse0 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~item~0.offset_62))) (select (select (store |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_62 (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_62) v_ULTIMATE.start_main_~item~0.offset_62 v_DerPreprocessor_42) .cse0 (_ bv1 32))) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_62 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_62) v_ULTIMATE.start_main_~item~0.offset_62 (_ bv0 32)) .cse0 v_DerPreprocessor_26)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset)) (bvadd (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_62 (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_62) v_ULTIMATE.start_main_~item~0.offset_62 (_ bv0 32)) .cse0 v_DerPreprocessor_27)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset) (_ bv8 32))))))) is different from false [2021-10-29 06:08:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 06:08:50,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667773723] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:08:50,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 06:08:50,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 25 [2021-10-29 06:08:50,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274131242] [2021-10-29 06:08:50,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-29 06:08:50,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 06:08:50,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-29 06:08:50,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=394, Unknown=5, NotChecked=126, Total=600 [2021-10-29 06:08:50,998 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:09:13,314 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse9 (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~bucket~0.base))) (let ((.cse5 (select .cse9 c_ULTIMATE.start_main_~bucket~0.offset))) (let ((.cse6 (select |c_#memory_$Pointer$.base| .cse5))) (let ((.cse1 (select .cse6 (_ bv0 32)))) (let ((.cse0 (select |c_#memory_$Pointer$.base| .cse1)) (.cse2 (select |c_#memory_$Pointer$.offset| .cse1)) (.cse7 (select |c_#memory_$Pointer$.offset| .cse5)) (.cse11 (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~bucket~0.base)) (.cse10 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~bucket~0.offset))) (and (= (select .cse0 (_ bv4 32)) (_ bv0 32)) (= c_ULTIMATE.start_main_~bucket~0.offset (_ bv0 32)) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| .cse1))) (= (_ bv2 32) (select (select |c_#memory_int| .cse1) (_ bv8 32))) (= (select .cse2 (_ bv4 32)) (_ bv0 32)) (forall ((v_ULTIMATE.start_main_~item~0.base_60 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.offset_60 (_ BitVec 32)) (v_DerPreprocessor_36 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32))) (or (= (let ((.cse3 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~item~0.offset_60))) (select (select (store |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_60 (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_60) v_ULTIMATE.start_main_~item~0.offset_60 v_DerPreprocessor_36) .cse3 (_ bv1 32))) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_60 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_60) v_ULTIMATE.start_main_~item~0.offset_60 (_ bv0 32)) .cse3 v_DerPreprocessor_26)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset)) (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_60 (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_60) v_ULTIMATE.start_main_~item~0.offset_60 (_ bv0 32)) .cse3 v_DerPreprocessor_27)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset)))) (_ bv1 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_60)))))) (forall ((v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32))) (= (_ bv1 32) (let ((.cse4 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~item~0.offset))) (select (select (store |c_#memory_int| c_ULTIMATE.start_main_~item~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~item~0.base) .cse4 (_ bv1 32))) (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~item~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~item~0.base) .cse4 v_DerPreprocessor_26)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset)) (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~item~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~item~0.base) .cse4 v_DerPreprocessor_27)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset)))))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| .cse5)) (_ bv1 1))) (not (= .cse1 c_ULTIMATE.start_main_~bucket~0.base)) (= (select .cse6 (_ bv4 32)) (_ bv0 32)) (= (select .cse0 (_ bv0 32)) (_ bv0 32)) (= (_ bv1 32) (select (select |c_#memory_int| .cse5) (_ bv8 32))) (= (select .cse2 (_ bv0 32)) (_ bv0 32)) (= (select .cse7 (_ bv4 32)) (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_ULTIMATE.start_main_~bucket~0.base)) (_ bv1 1))) (= (select .cse7 (_ bv0 32)) (_ bv0 32)) (forall ((v_ULTIMATE.start_main_~item~0.base_58 (_ BitVec 32)) (v_DerPreprocessor_28 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.offset_58 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32))) (or (= (let ((.cse8 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~item~0.offset_58))) (select (select (store |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_58 (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_58) v_ULTIMATE.start_main_~item~0.offset_58 v_DerPreprocessor_28) .cse8 (_ bv1 32))) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_58 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_58) v_ULTIMATE.start_main_~item~0.offset_58 (_ bv0 32)) .cse8 v_DerPreprocessor_26)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset)) (bvadd (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_58 (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_58) v_ULTIMATE.start_main_~item~0.offset_58 (_ bv0 32)) .cse8 v_DerPreprocessor_27)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset) (_ bv8 32)))) (_ bv1 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_58))))))) (= (select .cse9 .cse10) (_ bv0 32)) (= (select .cse11 c_ULTIMATE.start_main_~bucket~0.offset) (_ bv0 32)) (= (select .cse11 .cse10) (_ bv0 32)) (forall ((v_ULTIMATE.start_main_~item~0.base_62 (_ BitVec 32)) (v_DerPreprocessor_42 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.offset_62 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_62)))) (= (_ bv1 32) (let ((.cse12 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~item~0.offset_62))) (select (select (store |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_62 (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_62) v_ULTIMATE.start_main_~item~0.offset_62 v_DerPreprocessor_42) .cse12 (_ bv1 32))) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_62 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_62) v_ULTIMATE.start_main_~item~0.offset_62 (_ bv0 32)) .cse12 v_DerPreprocessor_26)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset)) (bvadd (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_62 (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_62) v_ULTIMATE.start_main_~item~0.offset_62 (_ bv0 32)) .cse12 v_DerPreprocessor_27)) c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset) (_ bv8 32))))))))))))) is different from false [2021-10-29 06:09:28,299 WARN L207 SmtUtils]: Spent 5.23 s on a formula simplification that was a NOOP. DAG size: 60 [2021-10-29 06:09:32,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:09:32,890 INFO L93 Difference]: Finished difference Result 144 states and 177 transitions. [2021-10-29 06:09:32,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 06:09:32,892 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 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 20 [2021-10-29 06:09:32,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:09:32,893 INFO L225 Difference]: With dead ends: 144 [2021-10-29 06:09:32,893 INFO L226 Difference]: Without dead ends: 110 [2021-10-29 06:09:32,894 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=148, Invalid=617, Unknown=7, NotChecked=220, Total=992 [2021-10-29 06:09:32,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-29 06:09:32,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 75. [2021-10-29 06:09:32,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 74 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:09:32,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2021-10-29 06:09:32,912 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 20 [2021-10-29 06:09:32,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:09:32,912 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2021-10-29 06:09:32,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:09:32,913 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2021-10-29 06:09:32,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 06:09:32,914 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:09:32,914 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:09:32,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-29 06:09:33,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-10-29 06:09:33,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-29 06:09:33,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:09:33,527 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-29 06:09:33,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:09:33,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1643406491, now seen corresponding path program 1 times [2021-10-29 06:09:33,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 06:09:33,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084353739] [2021-10-29 06:09:33,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:09:33,528 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 06:09:33,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 06:09:33,530 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 06:09:33,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-29 06:09:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:09:35,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-29 06:09:35,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:09:35,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:09:35,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:09:35,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 227 [2021-10-29 06:09:44,061 WARN L207 SmtUtils]: Spent 8.96 s on a formula simplification. DAG size of input: 25 DAG size of output: 9 [2021-10-29 06:09:44,062 INFO L354 Elim1Store]: treesize reduction 47, result has 25.4 percent of original size [2021-10-29 06:09:44,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 230 treesize of output 234 [2021-10-29 06:09:44,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:09:44,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:09:44,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 225 treesize of output 200 [2021-10-29 06:09:44,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:09:45,074 INFO L354 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2021-10-29 06:09:45,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 237 treesize of output 183 [2021-10-29 06:09:45,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:09:46,158 INFO L354 Elim1Store]: treesize reduction 82, result has 27.4 percent of original size [2021-10-29 06:09:46,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 323 treesize of output 189 [2021-10-29 06:09:46,166 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:09:46,168 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 287 [2021-10-29 06:09:46,169 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 06:09:46,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:09:46,455 INFO L354 Elim1Store]: treesize reduction 224, result has 14.8 percent of original size [2021-10-29 06:09:46,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 5 case distinctions, treesize of input 287 treesize of output 289 [2021-10-29 06:09:46,462 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:09:46,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 232 [2021-10-29 06:09:46,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 232 treesize of output 217 [2021-10-29 06:09:46,843 INFO L354 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2021-10-29 06:09:46,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 243 treesize of output 231 [2021-10-29 06:09:46,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:09:46,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:09:47,060 INFO L354 Elim1Store]: treesize reduction 198, result has 18.5 percent of original size [2021-10-29 06:09:47,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 228 treesize of output 172 [2021-10-29 06:09:47,132 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-29 06:09:47,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 224 treesize of output 228 [2021-10-29 06:09:47,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:09:47,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:09:47,310 INFO L354 Elim1Store]: treesize reduction 318, result has 17.8 percent of original size [2021-10-29 06:09:47,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 204 treesize of output 218 [2021-10-29 06:09:47,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:09:47,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:09:48,203 INFO L354 Elim1Store]: treesize reduction 258, result has 12.2 percent of original size [2021-10-29 06:09:48,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 247 treesize of output 179 [2021-10-29 06:09:48,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:09:48,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:09:48,399 INFO L354 Elim1Store]: treesize reduction 402, result has 13.0 percent of original size [2021-10-29 06:09:48,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 23 case distinctions, treesize of input 228 treesize of output 230 [2021-10-29 06:09:48,445 INFO L354 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2021-10-29 06:09:48,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 209 treesize of output 208 [2021-10-29 06:09:53,546 INFO L354 Elim1Store]: treesize reduction 217, result has 3.6 percent of original size [2021-10-29 06:09:53,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 226 treesize of output 119 [2021-10-29 06:09:53,655 INFO L354 Elim1Store]: treesize reduction 194, result has 1.5 percent of original size [2021-10-29 06:09:53,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 62 [2021-10-29 06:09:53,824 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-29 06:09:53,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 17 [2021-10-29 06:09:53,918 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:09:53,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:09:54,516 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:09:54,519 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-29 06:09:54,521 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:09:54,522 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-29 06:09:54,970 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:09:54,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-10-29 06:09:57,042 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~item~0.base_64 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.offset_64 (_ BitVec 32)) (v_DerPreprocessor_46 (_ BitVec 32)) (v_DerPreprocessor_47 (_ BitVec 32)) (v_DerPreprocessor_45 (_ BitVec 32))) (or (= (_ bv2 32) (let ((.cse0 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~item~0.offset_64))) (let ((.cse4 (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_64 (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_64) v_ULTIMATE.start_main_~item~0.offset_64 (_ bv0 32)) .cse0 v_DerPreprocessor_46))) (.cse1 (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_64 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_64) v_ULTIMATE.start_main_~item~0.offset_64 (_ bv0 32)) .cse0 v_DerPreprocessor_45)))) (let ((.cse2 (select (select .cse1 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset)) (.cse3 (select (select .cse4 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset))) (select (select (store |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_64 (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_64) v_ULTIMATE.start_main_~item~0.offset_64 v_DerPreprocessor_47) .cse0 (_ bv2 32))) (select (select .cse1 .cse2) .cse3)) (bvadd (_ bv8 32) (select (select .cse4 .cse2) .cse3))))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_64)))))) is different from false [2021-10-29 06:09:57,108 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:09:57,108 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 06:09:57,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084353739] [2021-10-29 06:09:57,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084353739] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:09:57,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [231220270] [2021-10-29 06:09:57,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:09:57,109 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 06:09:57,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 06:09:57,110 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 06:09:57,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-10-29 06:09:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:09:58,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-29 06:09:58,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:10:23,097 WARN L207 SmtUtils]: Spent 24.26 s on a formula simplification. DAG size of input: 25 DAG size of output: 9 [2021-10-29 06:10:23,098 INFO L354 Elim1Store]: treesize reduction 47, result has 25.4 percent of original size [2021-10-29 06:10:23,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 254 treesize of output 258 [2021-10-29 06:10:23,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:10:23,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:10:23,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 225 [2021-10-29 06:10:23,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:10:26,268 INFO L354 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2021-10-29 06:10:26,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 274 treesize of output 208 [2021-10-29 06:10:26,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:10:29,724 INFO L354 Elim1Store]: treesize reduction 82, result has 27.4 percent of original size [2021-10-29 06:10:29,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 360 treesize of output 214 [2021-10-29 06:10:29,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:10:29,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:10:29,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 360 treesize of output 323 [2021-10-29 06:10:29,741 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:10:29,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 287 [2021-10-29 06:10:29,743 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 06:10:29,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:10:29,973 INFO L354 Elim1Store]: treesize reduction 224, result has 14.8 percent of original size [2021-10-29 06:10:29,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 5 case distinctions, treesize of input 287 treesize of output 289 [2021-10-29 06:10:29,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 268 treesize of output 241 [2021-10-29 06:10:29,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 205 [2021-10-29 06:10:30,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:10:30,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:10:30,282 INFO L354 Elim1Store]: treesize reduction 96, result has 18.6 percent of original size [2021-10-29 06:10:30,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 18 case distinctions, treesize of input 243 treesize of output 187 [2021-10-29 06:10:30,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:10:30,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:10:30,399 INFO L354 Elim1Store]: treesize reduction 180, result has 15.9 percent of original size [2021-10-29 06:10:30,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 239 treesize of output 253 [2021-10-29 06:10:30,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 235 treesize of output 223 [2021-10-29 06:10:30,472 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-29 06:10:30,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 220 treesize of output 224 [2021-10-29 06:10:31,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:10:31,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:10:31,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:10:31,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:10:31,257 INFO L354 Elim1Store]: treesize reduction 108, result has 12.2 percent of original size [2021-10-29 06:10:31,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 20 case distinctions, treesize of input 247 treesize of output 179 [2021-10-29 06:10:31,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:10:31,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:10:31,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:10:31,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:10:31,343 INFO L354 Elim1Store]: treesize reduction 204, result has 11.7 percent of original size [2021-10-29 06:10:31,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 228 treesize of output 230 [2021-10-29 06:10:31,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:10:31,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 208 [2021-10-29 06:10:38,941 INFO L354 Elim1Store]: treesize reduction 242, result has 1.2 percent of original size [2021-10-29 06:10:38,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 243 treesize of output 177 [2021-10-29 06:10:39,700 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-10-29 06:10:39,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 162 treesize of output 76 [2021-10-29 06:10:39,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:10:39,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:10:41,963 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:10:41,964 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 203 [2021-10-29 06:10:41,970 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:10:41,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-10-29 06:10:42,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:10:42,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 296 [2021-10-29 06:10:44,734 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_50 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.base_66 (_ BitVec 32)) (v_DerPreprocessor_51 (_ BitVec 32)) (v_DerPreprocessor_49 (_ BitVec 32))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_66 (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_66) (_ bv0 32) (_ bv0 32)) (_ bv4 32) v_DerPreprocessor_50))) (.cse5 (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_66 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_66) (_ bv0 32) (_ bv0 32)) (_ bv4 32) v_DerPreprocessor_49)))) (let ((.cse1 (select (select .cse5 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset)) (.cse2 (select (select .cse6 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset))) (let ((.cse0 (store |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_66 (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_66) (_ bv0 32) v_DerPreprocessor_51) (_ bv4 32) (_ bv2 32)))) (.cse3 (select (select .cse5 .cse1) .cse2)) (.cse4 (select (select .cse6 .cse1) .cse2))) (or (not (= (_ bv2 32) (select (select .cse0 (_ bv0 32)) (_ bv8 32)))) (= (select (select .cse0 .cse1) (bvadd (_ bv8 32) .cse2)) (_ bv2 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_66)))) (= (_ bv2 32) (select (select .cse0 .cse3) (bvadd .cse4 (_ bv8 32)))) (not (= (select (select .cse5 .cse3) .cse4) (_ bv0 32)))))))) is different from false [2021-10-29 06:10:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:10:44,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [231220270] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:10:44,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089195968] [2021-10-29 06:10:44,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:10:44,815 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:10:44,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:10:44,817 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:10:44,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-29 06:10:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:10:46,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-29 06:10:46,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:10:54,073 WARN L207 SmtUtils]: Spent 7.83 s on a formula simplification. DAG size of input: 33 DAG size of output: 12 [2021-10-29 06:10:54,073 INFO L354 Elim1Store]: treesize reduction 92, result has 15.6 percent of original size [2021-10-29 06:10:54,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 253 treesize of output 228 [2021-10-29 06:11:03,138 WARN L207 SmtUtils]: Spent 9.06 s on a formula simplification. DAG size of input: 25 DAG size of output: 9 [2021-10-29 06:11:03,139 INFO L354 Elim1Store]: treesize reduction 47, result has 25.4 percent of original size [2021-10-29 06:11:03,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 231 treesize of output 235 [2021-10-29 06:11:06,808 INFO L354 Elim1Store]: treesize reduction 92, result has 15.6 percent of original size [2021-10-29 06:11:06,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 225 treesize of output 200 [2021-10-29 06:11:09,059 INFO L354 Elim1Store]: treesize reduction 224, result has 7.1 percent of original size [2021-10-29 06:11:09,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 237 treesize of output 183 [2021-10-29 06:11:10,685 INFO L354 Elim1Store]: treesize reduction 216, result has 12.6 percent of original size [2021-10-29 06:11:10,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 323 treesize of output 189 [2021-10-29 06:11:10,693 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:11:10,694 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 287 [2021-10-29 06:11:10,695 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 06:11:10,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 287 treesize of output 272 [2021-10-29 06:11:10,706 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:11:10,707 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-10-29 06:11:10,969 INFO L354 Elim1Store]: treesize reduction 800, result has 4.6 percent of original size [2021-10-29 06:11:10,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 5 case distinctions, treesize of input 221 treesize of output 223 [2021-10-29 06:11:11,970 INFO L354 Elim1Store]: treesize reduction 280, result has 13.8 percent of original size [2021-10-29 06:11:11,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 248 treesize of output 188 [2021-10-29 06:11:12,334 INFO L354 Elim1Store]: treesize reduction 424, result has 14.0 percent of original size [2021-10-29 06:11:12,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 244 treesize of output 258 [2021-10-29 06:11:12,482 INFO L354 Elim1Store]: treesize reduction 60, result has 29.4 percent of original size [2021-10-29 06:11:12,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 240 treesize of output 244 [2021-10-29 06:11:12,550 INFO L354 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2021-10-29 06:11:12,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 223 treesize of output 211 [2021-10-29 06:11:12,552 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-29 06:11:13,876 INFO L354 Elim1Store]: treesize reduction 340, result has 9.6 percent of original size [2021-10-29 06:11:13,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 24 case distinctions, treesize of input 255 treesize of output 183 [2021-10-29 06:11:14,118 INFO L354 Elim1Store]: treesize reduction 508, result has 10.6 percent of original size [2021-10-29 06:11:14,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 24 case distinctions, treesize of input 236 treesize of output 238 [2021-10-29 06:11:14,169 INFO L354 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2021-10-29 06:11:14,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 217 treesize of output 216 [2021-10-29 06:11:22,955 INFO L354 Elim1Store]: treesize reduction 308, result has 1.0 percent of original size [2021-10-29 06:11:22,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 238 treesize of output 121 [2021-10-29 06:11:23,070 INFO L354 Elim1Store]: treesize reduction 280, result has 1.1 percent of original size [2021-10-29 06:11:23,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 94 treesize of output 62 [2021-10-29 06:11:23,104 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-29 06:11:23,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 17 [2021-10-29 06:11:23,126 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:11:23,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:11:23,293 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:11:23,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-29 06:11:23,298 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:11:23,299 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-29 06:11:23,878 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:11:23,880 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-10-29 06:11:25,948 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~item~0.base_68 (_ BitVec 32)) (v_DerPreprocessor_46 (_ BitVec 32)) (v_DerPreprocessor_45 (_ BitVec 32)) (v_DerPreprocessor_56 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.offset_68 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_68)))) (= (let ((.cse0 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~item~0.offset_68))) (let ((.cse4 (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_68 (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_68) v_ULTIMATE.start_main_~item~0.offset_68 (_ bv0 32)) .cse0 v_DerPreprocessor_46))) (.cse1 (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_68 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_68) v_ULTIMATE.start_main_~item~0.offset_68 (_ bv0 32)) .cse0 v_DerPreprocessor_45)))) (let ((.cse2 (select (select .cse1 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset)) (.cse3 (select (select .cse4 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset))) (select (select (store |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_68 (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_68) v_ULTIMATE.start_main_~item~0.offset_68 v_DerPreprocessor_56) .cse0 (_ bv2 32))) (select (select .cse1 .cse2) .cse3)) (bvadd (_ bv8 32) (select (select .cse4 .cse2) .cse3)))))) (_ bv2 32)))) is different from false [2021-10-29 06:11:26,012 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:11:26,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089195968] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:11:26,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 06:11:26,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10, 13, 9, 9] total 40 [2021-10-29 06:11:26,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781556788] [2021-10-29 06:11:26,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-29 06:11:26,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 06:11:26,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-29 06:11:26,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1169, Unknown=6, NotChecked=216, Total=1560 [2021-10-29 06:11:26,017 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand has 40 states, 40 states have (on average 2.05) internal successors, (82), 40 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:11:42,306 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse17 (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~bucket~0.base))) (let ((.cse9 (select .cse17 c_ULTIMATE.start_main_~bucket~0.offset))) (let ((.cse10 (select |c_#memory_$Pointer$.base| .cse9))) (let ((.cse2 (select .cse10 (_ bv0 32)))) (let ((.cse0 (not (= c_ULTIMATE.start_main_~bcki~0.base (_ bv0 32)))) (.cse1 (select |c_#memory_$Pointer$.base| .cse2)) (.cse3 (select |c_#memory_$Pointer$.offset| .cse2)) (.cse16 (select |c_#memory_$Pointer$.offset| .cse9)) (.cse19 (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~bucket~0.base)) (.cse18 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~bucket~0.offset))) (and (or (not (= c_ULTIMATE.start_main_~bcki~0.offset (_ bv0 32))) .cse0) (= (select .cse1 (_ bv4 32)) (_ bv0 32)) (= c_ULTIMATE.start_main_~bucket~0.offset (_ bv0 32)) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| .cse2))) (= (_ bv2 32) (select (select |c_#memory_int| .cse2) (_ bv8 32))) (= (select .cse3 (_ bv4 32)) (_ bv0 32)) (forall ((v_ULTIMATE.start_main_~item~0.base_64 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.offset_64 (_ BitVec 32)) (v_DerPreprocessor_46 (_ BitVec 32)) (v_DerPreprocessor_47 (_ BitVec 32)) (v_DerPreprocessor_45 (_ BitVec 32))) (or (= (_ bv2 32) (let ((.cse4 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~item~0.offset_64))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_64 (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_64) v_ULTIMATE.start_main_~item~0.offset_64 (_ bv0 32)) .cse4 v_DerPreprocessor_46))) (.cse5 (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_64 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_64) v_ULTIMATE.start_main_~item~0.offset_64 (_ bv0 32)) .cse4 v_DerPreprocessor_45)))) (let ((.cse6 (select (select .cse5 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset)) (.cse7 (select (select .cse8 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset))) (select (select (store |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_64 (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_64) v_ULTIMATE.start_main_~item~0.offset_64 v_DerPreprocessor_47) .cse4 (_ bv2 32))) (select (select .cse5 .cse6) .cse7)) (bvadd (_ bv8 32) (select (select .cse8 .cse6) .cse7))))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_64)))))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| .cse9)) (_ bv1 1))) (not (= .cse2 c_ULTIMATE.start_main_~bucket~0.base)) (= (select .cse10 (_ bv4 32)) (_ bv0 32)) (forall ((v_ULTIMATE.start_main_~item~0.base_68 (_ BitVec 32)) (v_DerPreprocessor_46 (_ BitVec 32)) (v_DerPreprocessor_45 (_ BitVec 32)) (v_DerPreprocessor_56 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.offset_68 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_68)))) (= (let ((.cse11 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~item~0.offset_68))) (let ((.cse15 (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_68 (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_68) v_ULTIMATE.start_main_~item~0.offset_68 (_ bv0 32)) .cse11 v_DerPreprocessor_46))) (.cse12 (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_68 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_68) v_ULTIMATE.start_main_~item~0.offset_68 (_ bv0 32)) .cse11 v_DerPreprocessor_45)))) (let ((.cse13 (select (select .cse12 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset)) (.cse14 (select (select .cse15 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset))) (select (select (store |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_68 (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_68) v_ULTIMATE.start_main_~item~0.offset_68 v_DerPreprocessor_56) .cse11 (_ bv2 32))) (select (select .cse12 .cse13) .cse14)) (bvadd (_ bv8 32) (select (select .cse15 .cse13) .cse14)))))) (_ bv2 32)))) (or (not (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~bcki~0.base) (_ bv8 32)) (select (select |c_#memory_int| c_ULTIMATE.start_main_~item~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~item~0.offset)))) .cse0) (= (select .cse1 (_ bv0 32)) (_ bv0 32)) (not (= .cse2 .cse9)) (= (select .cse3 (_ bv0 32)) (_ bv0 32)) (= (select .cse16 (_ bv4 32)) (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_ULTIMATE.start_main_~bucket~0.base)) (_ bv1 1))) (= (select .cse16 (_ bv0 32)) (_ bv0 32)) (= (select .cse17 .cse18) (_ bv0 32)) (= (select .cse19 c_ULTIMATE.start_main_~bucket~0.offset) (_ bv0 32)) (= (select .cse19 .cse18) (_ bv0 32)) (forall ((v_DerPreprocessor_50 (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.base_66 (_ BitVec 32)) (v_DerPreprocessor_51 (_ BitVec 32)) (v_DerPreprocessor_49 (_ BitVec 32))) (let ((.cse26 (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_66 (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_main_~item~0.base_66) (_ bv0 32) (_ bv0 32)) (_ bv4 32) v_DerPreprocessor_50))) (.cse25 (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_66 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_main_~item~0.base_66) (_ bv0 32) (_ bv0 32)) (_ bv4 32) v_DerPreprocessor_49)))) (let ((.cse21 (select (select .cse25 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset)) (.cse22 (select (select .cse26 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset))) (let ((.cse20 (store |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_66 (store (store (select |c_#memory_int| v_ULTIMATE.start_main_~item~0.base_66) (_ bv0 32) v_DerPreprocessor_51) (_ bv4 32) (_ bv2 32)))) (.cse23 (select (select .cse25 .cse21) .cse22)) (.cse24 (select (select .cse26 .cse21) .cse22))) (or (not (= (_ bv2 32) (select (select .cse20 (_ bv0 32)) (_ bv8 32)))) (= (select (select .cse20 .cse21) (bvadd (_ bv8 32) .cse22)) (_ bv2 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~item~0.base_66)))) (= (_ bv2 32) (select (select .cse20 .cse23) (bvadd .cse24 (_ bv8 32)))) (not (= (select (select .cse25 .cse23) .cse24) (_ bv0 32)))))))))))))) is different from false [2021-10-29 06:12:31,371 WARN L207 SmtUtils]: Spent 7.23 s on a formula simplification that was a NOOP. DAG size: 74 [2021-10-29 06:12:56,494 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse7 (select (select |c_#memory_int| c_ULTIMATE.start_main_~item~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~item~0.offset)))) (and (forall ((v_DerPreprocessor_46 (_ BitVec 32)) (v_DerPreprocessor_45 (_ BitVec 32))) (= (let ((.cse0 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~item~0.offset))) (let ((.cse4 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~item~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~item~0.base) .cse0 v_DerPreprocessor_46))) (.cse1 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~item~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~item~0.base) .cse0 v_DerPreprocessor_45)))) (let ((.cse2 (select (select .cse1 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset)) (.cse3 (select (select .cse4 c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset))) (select (select (store |c_#memory_int| c_ULTIMATE.start_main_~item~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~item~0.base) .cse0 (_ bv2 32))) (select (select .cse1 .cse2) .cse3)) (bvadd (_ bv8 32) (select (select .cse4 .cse2) .cse3)))))) (_ bv2 32))) (= (let ((.cse5 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~bcki~0.base) c_ULTIMATE.start_main_~bcki~0.offset)) (.cse6 (select (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~bcki~0.base) c_ULTIMATE.start_main_~bcki~0.offset))) (select (select |c_#memory_int| (select (select |c_#memory_$Pointer$.base| .cse5) .cse6)) (bvadd (select (select |c_#memory_$Pointer$.offset| .cse5) .cse6) (_ bv8 32)))) .cse7) (= .cse7 (let ((.cse8 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset)) (.cse9 (select (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~bucket~0.base) c_ULTIMATE.start_main_~bucket~0.offset))) (select (select |c_#memory_int| (select (select |c_#memory_$Pointer$.base| .cse8) .cse9)) (bvadd (_ bv8 32) (select (select |c_#memory_$Pointer$.offset| .cse8) .cse9))))))) is different from false [2021-10-29 06:13:11,259 WARN L207 SmtUtils]: Spent 12.17 s on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2021-10-29 06:13:46,239 WARN L207 SmtUtils]: Spent 14.23 s on a formula simplification that was a NOOP. DAG size: 74 [2021-10-29 06:13:57,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:13:57,225 INFO L93 Difference]: Finished difference Result 155 states and 193 transitions. [2021-10-29 06:13:57,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-29 06:13:57,231 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.05) internal successors, (82), 40 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-29 06:13:57,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:13:57,233 INFO L225 Difference]: With dead ends: 155 [2021-10-29 06:13:57,233 INFO L226 Difference]: Without dead ends: 121 [2021-10-29 06:13:57,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 100.4s TimeCoverageRelationStatistics Valid=477, Invalid=2396, Unknown=9, NotChecked=540, Total=3422 [2021-10-29 06:13:57,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-29 06:13:57,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 73. [2021-10-29 06:13:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 71 states have (on average 1.2112676056338028) internal successors, (86), 72 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:13:57,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 86 transitions. [2021-10-29 06:13:57,257 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 86 transitions. Word has length 20 [2021-10-29 06:13:57,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:13:57,257 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 86 transitions. [2021-10-29 06:13:57,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.05) internal successors, (82), 40 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:13:57,258 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 86 transitions. [2021-10-29 06:13:57,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 06:13:57,259 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:13:57,260 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:13:57,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-29 06:13:57,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-10-29 06:13:57,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-29 06:13:57,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 06:13:57,862 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-29 06:13:57,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:13:57,863 INFO L85 PathProgramCache]: Analyzing trace with hash -699796204, now seen corresponding path program 1 times [2021-10-29 06:13:57,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 06:13:57,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852106059] [2021-10-29 06:13:57,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:13:57,864 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 06:13:57,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 06:13:57,865 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 06:13:57,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-29 06:13:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 06:13:59,439 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 06:13:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 06:13:59,860 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 06:13:59,860 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 06:13:59,861 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 06:13:59,864 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 06:13:59,865 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 06:13:59,865 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 06:13:59,865 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 06:13:59,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-29 06:14:00,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 06:14:00,070 INFO L731 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:14:00,073 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 06:14:00,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 06:14:00 BoogieIcfgContainer [2021-10-29 06:14:00,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 06:14:00,117 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 06:14:00,117 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 06:14:00,118 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 06:14:00,118 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:01:18" (3/4) ... [2021-10-29 06:14:00,121 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 06:14:00,233 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 06:14:00,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 06:14:00,242 INFO L168 Benchmark]: Toolchain (without parser) took 765211.31 ms. Allocated memory was 58.7 MB in the beginning and 98.6 MB in the end (delta: 39.8 MB). Free memory was 34.8 MB in the beginning and 43.4 MB in the end (delta: -8.5 MB). Peak memory consumption was 58.4 MB. Max. memory is 16.1 GB. [2021-10-29 06:14:00,242 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 58.7 MB. Free memory is still 39.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 06:14:00,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 542.36 ms. Allocated memory is still 58.7 MB. Free memory was 34.7 MB in the beginning and 32.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 06:14:00,243 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.56 ms. Allocated memory is still 58.7 MB. Free memory was 32.2 MB in the beginning and 29.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 06:14:00,243 INFO L168 Benchmark]: Boogie Preprocessor took 41.85 ms. Allocated memory is still 58.7 MB. Free memory was 29.9 MB in the beginning and 28.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 06:14:00,244 INFO L168 Benchmark]: RCFGBuilder took 2789.55 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 27.8 MB in the beginning and 43.5 MB in the end (delta: -15.7 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-10-29 06:14:00,244 INFO L168 Benchmark]: TraceAbstraction took 761648.30 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 43.2 MB in the beginning and 21.7 MB in the end (delta: 21.5 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. [2021-10-29 06:14:00,247 INFO L168 Benchmark]: Witness Printer took 116.48 ms. Allocated memory is still 98.6 MB. Free memory was 21.7 MB in the beginning and 43.4 MB in the end (delta: -21.7 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-29 06:14:00,250 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 58.7 MB. Free memory is still 39.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 542.36 ms. Allocated memory is still 58.7 MB. Free memory was 34.7 MB in the beginning and 32.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.56 ms. Allocated memory is still 58.7 MB. Free memory was 32.2 MB in the beginning and 29.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.85 ms. Allocated memory is still 58.7 MB. Free memory was 29.9 MB in the beginning and 28.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2789.55 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 27.8 MB in the beginning and 43.5 MB in the end (delta: -15.7 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 761648.30 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 43.2 MB in the beginning and 21.7 MB in the end (delta: 21.5 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. * Witness Printer took 116.48 ms. Allocated memory is still 98.6 MB. Free memory was 21.7 MB in the beginning and 43.4 MB in the end (delta: -21.7 MB). Peak memory consumption was 5.3 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1061]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1004] BCK* bucket = malloc(sizeof(BCK)); [L1005] bucket->data = 0 [L1006] bucket->list = ((void*)0) [L1008] bucket->next = malloc(sizeof(BCK)) [L1009] EXPR bucket->next [L1009] BCK* bcki = bucket->next; [L1010] bcki->data = 1 [L1011] bcki->list = ((void*)0) [L1013] bcki->next = malloc(sizeof(BCK)) [L1014] EXPR bcki->next [L1014] bcki = bcki->next [L1015] bcki->data = 2 [L1016] bcki->list = ((void*)0) [L1017] bcki->next = ((void*)0) [L1019] struct TSLL* item = ((void*)0); [L1020] struct TSLL* itr = ((void*)0); [L1021] COND TRUE __VERIFIER_nondet_int() [L1023] item = malloc(sizeof(SLL)) [L1024] item->next = ((void*)0) [L1025] COND TRUE __VERIFIER_nondet_int() [L1026] item->data = 0 [L1032] bcki = bucket [L1034] COND FALSE !(!(bcki != ((void*)0))) [L1035] COND FALSE !(!(item != ((void*)0))) [L1036] EXPR bcki->data [L1036] EXPR item->data [L1036] COND FALSE !(bcki->data != item->data) [L1038] COND FALSE !(!(bcki != ((void*)0))) [L1040] EXPR bcki->list [L1040] COND TRUE bcki->list == ((void*)0) [L1041] bcki->list = item [L1021] COND FALSE !(__VERIFIER_nondet_int()) [L1052] bcki = bucket [L1053] COND TRUE bcki != ((void*)0) [L1055] EXPR bcki->list [L1055] item = bcki->list [L1056] bcki->list = ((void*)0) [L1057] COND TRUE item != ((void*)0) [L1059] itr = item [L1060] EXPR item->next [L1060] item = item->next [L1061] EXPR itr->data [L1061] EXPR bcki->data [L1061] COND TRUE !(itr->data != bcki->data) [L1061] reach_error() - UnprovableResult [Line: 1034]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1035]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 761.5s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 357.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 367 SDtfs, 1360 SDslu, 1923 SDs, 0 SdLazy, 3199 SolverSat, 357 SolverUnsat, 102 SolverUnknown, 0 SolverNotchecked, 220.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 690 GetRequests, 462 SyntacticMatches, 16 SemanticMatches, 212 ConstructedPredicates, 17 IntricatePredicates, 1 DeprecatedPredicates, 1768 ImplicationChecksByTransitivity, 208.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=9, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 287 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 10.1s SatisfiabilityAnalysisTime, 377.6s InterpolantComputationTime, 348 NumberOfCodeBlocks, 348 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 612 ConstructedInterpolants, 133 QuantifiedInterpolants, 43820 SizeOfPredicates, 162 NumberOfNonLiveVariables, 1693 ConjunctsInSsa, 407 ConjunctsInUnsatCore, 40 InterpolantComputations, 10 PerfectInterpolantSequences, 102/258 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-29 06:14:00,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d16bb65a-15b3-480b-b82f-ab4466c3c6c2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...