./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s12if.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/s12if.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 967212eaab4ee70dc7d11c1f4edf607d989bdf53 .............................................................................................................................................................................................................................................................................................................................................................................................................. 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_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/s12if.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 967212eaab4ee70dc7d11c1f4edf607d989bdf53 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:52:05,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:52:05,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:52:05,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:52:05,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:52:05,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:52:05,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:52:05,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:52:05,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:52:05,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:52:05,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:52:05,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:52:05,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:52:05,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:52:05,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:52:05,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:52:05,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:52:05,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:52:05,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:52:05,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:52:05,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:52:05,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:52:05,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:52:05,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:52:05,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:52:05,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:52:05,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:52:05,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:52:05,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:52:05,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:52:05,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:52:05,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:52:05,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:52:05,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:52:05,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:52:05,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:52:05,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:52:05,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:52:05,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:52:05,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:52:05,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:52:05,276 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:52:05,303 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:52:05,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:52:05,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:52:05,305 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:52:05,305 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:52:05,305 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:52:05,305 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:52:05,305 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:52:05,306 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:52:05,306 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:52:05,306 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:52:05,306 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:52:05,306 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:52:05,307 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:52:05,307 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:52:05,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:52:05,308 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:52:05,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:52:05,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:52:05,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:52:05,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:52:05,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:52:05,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:52:05,309 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:52:05,309 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:52:05,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:52:05,310 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:52:05,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:52:05,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:52:05,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:52:05,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:52:05,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:52:05,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:52:05,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:52:05,311 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:52:05,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:52:05,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:52:05,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:52:05,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:52:05,312 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_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 967212eaab4ee70dc7d11c1f4edf607d989bdf53 [2021-10-13 07:52:05,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:52:05,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:52:05,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:52:05,674 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:52:05,675 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:52:05,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/array-fpi/s12if.c [2021-10-13 07:52:05,757 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/data/307781d03/a46f676f648a420ebc53871f16a028d9/FLAG0b7104209 [2021-10-13 07:52:06,293 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:52:06,296 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/sv-benchmarks/c/array-fpi/s12if.c [2021-10-13 07:52:06,307 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/data/307781d03/a46f676f648a420ebc53871f16a028d9/FLAG0b7104209 [2021-10-13 07:52:06,612 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/data/307781d03/a46f676f648a420ebc53871f16a028d9 [2021-10-13 07:52:06,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:52:06,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:52:06,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:52:06,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:52:06,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:52:06,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:52:06" (1/1) ... [2021-10-13 07:52:06,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a57bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:06, skipping insertion in model container [2021-10-13 07:52:06,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:52:06" (1/1) ... [2021-10-13 07:52:06,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:52:06,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:52:06,848 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_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/sv-benchmarks/c/array-fpi/s12if.c[588,601] [2021-10-13 07:52:06,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:52:06,882 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:52:06,895 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_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/sv-benchmarks/c/array-fpi/s12if.c[588,601] [2021-10-13 07:52:06,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:52:06,921 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:52:06,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:06 WrapperNode [2021-10-13 07:52:06,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:52:06,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:52:06,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:52:06,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:52:06,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:06" (1/1) ... [2021-10-13 07:52:06,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:06" (1/1) ... [2021-10-13 07:52:06,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:52:06,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:52:06,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:52:06,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:52:06,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:06" (1/1) ... [2021-10-13 07:52:06,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:06" (1/1) ... [2021-10-13 07:52:06,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:06" (1/1) ... [2021-10-13 07:52:06,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:06" (1/1) ... [2021-10-13 07:52:06,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:06" (1/1) ... [2021-10-13 07:52:07,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:06" (1/1) ... [2021-10-13 07:52:07,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:06" (1/1) ... [2021-10-13 07:52:07,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:52:07,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:52:07,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:52:07,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:52:07,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:06" (1/1) ... [2021-10-13 07:52:07,033 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:52:07,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:52:07,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:52:07,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:52:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:52:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:52:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:52:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 07:52:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:52:07,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:52:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 07:52:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:52:07,618 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:52:07,618 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-13 07:52:07,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:07 BoogieIcfgContainer [2021-10-13 07:52:07,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:52:07,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:52:07,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:52:07,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:52:07,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:52:06" (1/3) ... [2021-10-13 07:52:07,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c815a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:52:07, skipping insertion in model container [2021-10-13 07:52:07,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:06" (2/3) ... [2021-10-13 07:52:07,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c815a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:52:07, skipping insertion in model container [2021-10-13 07:52:07,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:07" (3/3) ... [2021-10-13 07:52:07,635 INFO L111 eAbstractionObserver]: Analyzing ICFG s12if.c [2021-10-13 07:52:07,645 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:52:07,645 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:52:07,693 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:52:07,700 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:52:07,700 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:52:07,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:07,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:52:07,725 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:52:07,725 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:52:07,726 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:52:07,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:52:07,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1162179950, now seen corresponding path program 1 times [2021-10-13 07:52:07,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:52:07,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934839791] [2021-10-13 07:52:07,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:52:07,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:52:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:52:07,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:52:07,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:52:07,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934839791] [2021-10-13 07:52:07,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934839791] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:52:07,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:52:07,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:52:07,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712482437] [2021-10-13 07:52:07,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:52:07,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:52:07,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:52:07,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:52:07,970 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 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) [2021-10-13 07:52:08,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:52:08,051 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2021-10-13 07:52:08,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:52:08,054 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 [2021-10-13 07:52:08,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:52:08,064 INFO L225 Difference]: With dead ends: 20 [2021-10-13 07:52:08,065 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 07:52:08,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:52:08,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 07:52:08,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 07:52:08,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:08,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2021-10-13 07:52:08,112 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 7 [2021-10-13 07:52:08,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:52:08,113 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-10-13 07:52:08,113 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) [2021-10-13 07:52:08,113 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2021-10-13 07:52:08,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:52:08,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:52:08,114 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:52:08,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:52:08,115 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:52:08,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:52:08,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1871859412, now seen corresponding path program 1 times [2021-10-13 07:52:08,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:52:08,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337431805] [2021-10-13 07:52:08,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:52:08,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:52:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:52:08,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:52:08,185 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:52:08,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337431805] [2021-10-13 07:52:08,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337431805] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:52:08,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:52:08,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:52:08,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822715938] [2021-10-13 07:52:08,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:52:08,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:52:08,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:52:08,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:52:08,189 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:08,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:52:08,223 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2021-10-13 07:52:08,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:52:08,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 [2021-10-13 07:52:08,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:52:08,225 INFO L225 Difference]: With dead ends: 15 [2021-10-13 07:52:08,225 INFO L226 Difference]: Without dead ends: 11 [2021-10-13 07:52:08,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:52:08,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-13 07:52:08,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-13 07:52:08,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:08,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-10-13 07:52:08,230 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2021-10-13 07:52:08,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:52:08,230 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-10-13 07:52:08,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:08,231 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-10-13 07:52:08,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:52:08,232 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:52:08,232 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:52:08,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:52:08,232 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:52:08,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:52:08,233 INFO L82 PathProgramCache]: Analyzing trace with hash 908788323, now seen corresponding path program 1 times [2021-10-13 07:52:08,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:52:08,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793261973] [2021-10-13 07:52:08,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:52:08,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:52:08,259 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:52:08,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206360540] [2021-10-13 07:52:08,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:52:08,261 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:52:08,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:52:08,263 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:52:08,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:52:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:52:08,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 07:52:08,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:52:08,458 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 07:52:08,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2021-10-13 07:52:08,553 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 19 treesize of output 18 [2021-10-13 07:52:08,798 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 0 case distinctions, treesize of input 32 treesize of output 23 [2021-10-13 07:52:09,009 INFO L354 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2021-10-13 07:52:09,010 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 2 case distinctions, treesize of input 40 treesize of output 27 [2021-10-13 07:52:09,148 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-13 07:52:09,148 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 56 treesize of output 40 [2021-10-13 07:52:09,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:52:09,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:52:10,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:52:10,292 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:52:10,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793261973] [2021-10-13 07:52:10,293 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:52:10,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206360540] [2021-10-13 07:52:10,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206360540] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:52:10,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [272773646] [2021-10-13 07:52:10,326 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-13 07:52:10,326 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:52:10,334 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:52:10,340 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:52:10,340 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:52:10,380 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:52:10,384 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:52:10,385 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:52:10,386 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:52:10,388 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:52:10,389 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:52:10,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:52:10,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-10-13 07:52:10,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:52:10,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:52:10,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:52:10,485 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 07:52:10,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-13 07:52:10,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:52:10,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:52:10,492 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:52:10,493 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:52:10,493 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:52:10,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:52:10,527 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:52:10,529 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:52:10,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-10-13 07:52:10,532 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:52:10,532 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:108 [2021-10-13 07:52:10,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:52:10,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-13 07:52:10,762 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_17| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:52:10,766 INFO L168 Benchmark]: Toolchain (without parser) took 4148.69 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 63.2 MB in the beginning and 85.0 MB in the end (delta: -21.8 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:52:10,766 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 100.7 MB. Free memory was 79.4 MB in the beginning and 79.4 MB in the end (delta: 60.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:52:10,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.42 ms. Allocated memory is still 100.7 MB. Free memory was 63.0 MB in the beginning and 75.2 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:52:10,767 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.26 ms. Allocated memory is still 100.7 MB. Free memory was 75.2 MB in the beginning and 73.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:52:10,768 INFO L168 Benchmark]: Boogie Preprocessor took 48.65 ms. Allocated memory is still 100.7 MB. Free memory was 73.6 MB in the beginning and 72.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:52:10,769 INFO L168 Benchmark]: RCFGBuilder took 608.82 ms. Allocated memory is still 100.7 MB. Free memory was 72.1 MB in the beginning and 55.9 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:52:10,769 INFO L168 Benchmark]: TraceAbstraction took 3141.35 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 55.6 MB in the beginning and 85.0 MB in the end (delta: -29.4 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:52:10,773 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 100.7 MB. Free memory was 79.4 MB in the beginning and 79.4 MB in the end (delta: 60.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 303.42 ms. Allocated memory is still 100.7 MB. Free memory was 63.0 MB in the beginning and 75.2 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.26 ms. Allocated memory is still 100.7 MB. Free memory was 75.2 MB in the beginning and 73.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.65 ms. Allocated memory is still 100.7 MB. Free memory was 73.6 MB in the beginning and 72.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 608.82 ms. Allocated memory is still 100.7 MB. Free memory was 72.1 MB in the beginning and 55.9 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3141.35 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 55.6 MB in the beginning and 85.0 MB in the end (delta: -29.4 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_17| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_17|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:52:10,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:52:13,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:52:13,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:52:13,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:52:13,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:52:13,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:52:13,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:52:13,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:52:13,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:52:13,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:52:13,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:52:13,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:52:13,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:52:13,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:52:13,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:52:13,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:52:13,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:52:13,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:52:13,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:52:13,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:52:13,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:52:13,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:52:13,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:52:13,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:52:13,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:52:13,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:52:13,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:52:13,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:52:13,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:52:13,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:52:13,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:52:13,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:52:13,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:52:13,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:52:13,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:52:13,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:52:13,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:52:13,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:52:13,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:52:13,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:52:13,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:52:13,441 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:52:13,510 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:52:13,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:52:13,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:52:13,512 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:52:13,513 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:52:13,513 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:52:13,513 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:52:13,513 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:52:13,514 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:52:13,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:52:13,517 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:52:13,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:52:13,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:52:13,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:52:13,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:52:13,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:52:13,518 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:52:13,519 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:52:13,519 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:52:13,519 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:52:13,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:52:13,520 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:52:13,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:52:13,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:52:13,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:52:13,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:52:13,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:52:13,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:52:13,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:52:13,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:52:13,522 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:52:13,522 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:52:13,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:52:13,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:52:13,523 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:52:13,524 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_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 967212eaab4ee70dc7d11c1f4edf607d989bdf53 [2021-10-13 07:52:13,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:52:13,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:52:13,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:52:13,947 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:52:13,948 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:52:13,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/array-fpi/s12if.c [2021-10-13 07:52:14,022 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/data/55ae17797/70dbcfdea58c49199b03a3a818bdfcd1/FLAG9b908b363 [2021-10-13 07:52:14,481 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:52:14,482 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/sv-benchmarks/c/array-fpi/s12if.c [2021-10-13 07:52:14,490 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/data/55ae17797/70dbcfdea58c49199b03a3a818bdfcd1/FLAG9b908b363 [2021-10-13 07:52:14,862 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/data/55ae17797/70dbcfdea58c49199b03a3a818bdfcd1 [2021-10-13 07:52:14,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:52:14,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:52:14,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:52:14,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:52:14,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:52:14,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:52:14" (1/1) ... [2021-10-13 07:52:14,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a29d620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:14, skipping insertion in model container [2021-10-13 07:52:14,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:52:14" (1/1) ... [2021-10-13 07:52:14,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:52:14,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:52:15,098 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_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/sv-benchmarks/c/array-fpi/s12if.c[588,601] [2021-10-13 07:52:15,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:52:15,136 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:52:15,147 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_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/sv-benchmarks/c/array-fpi/s12if.c[588,601] [2021-10-13 07:52:15,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:52:15,227 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:52:15,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:15 WrapperNode [2021-10-13 07:52:15,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:52:15,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:52:15,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:52:15,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:52:15,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:15" (1/1) ... [2021-10-13 07:52:15,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:15" (1/1) ... [2021-10-13 07:52:15,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:52:15,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:52:15,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:52:15,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:52:15,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:15" (1/1) ... [2021-10-13 07:52:15,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:15" (1/1) ... [2021-10-13 07:52:15,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:15" (1/1) ... [2021-10-13 07:52:15,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:15" (1/1) ... [2021-10-13 07:52:15,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:15" (1/1) ... [2021-10-13 07:52:15,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:15" (1/1) ... [2021-10-13 07:52:15,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:15" (1/1) ... [2021-10-13 07:52:15,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:52:15,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:52:15,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:52:15,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:52:15,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:15" (1/1) ... [2021-10-13 07:52:15,391 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:52:15,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:52:15,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:52:15,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:52:15,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:52:15,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:52:15,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-10-13 07:52:15,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 07:52:15,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 07:52:15,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:52:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:52:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-10-13 07:52:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:52:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 07:52:15,980 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:52:15,981 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-13 07:52:15,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:15 BoogieIcfgContainer [2021-10-13 07:52:15,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:52:15,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:52:15,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:52:15,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:52:15,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:52:14" (1/3) ... [2021-10-13 07:52:15,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcfa514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:52:15, skipping insertion in model container [2021-10-13 07:52:15,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:15" (2/3) ... [2021-10-13 07:52:15,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcfa514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:52:15, skipping insertion in model container [2021-10-13 07:52:15,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:15" (3/3) ... [2021-10-13 07:52:15,991 INFO L111 eAbstractionObserver]: Analyzing ICFG s12if.c [2021-10-13 07:52:15,996 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:52:15,996 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:52:16,051 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:52:16,066 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:52:16,066 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:52:16,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:16,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:52:16,092 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:52:16,092 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:52:16,093 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:52:16,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:52:16,099 INFO L82 PathProgramCache]: Analyzing trace with hash -845308063, now seen corresponding path program 1 times [2021-10-13 07:52:16,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:52:16,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262690228] [2021-10-13 07:52:16,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:52:16,118 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:52:16,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:52:16,125 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:52:16,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:52:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:52:16,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:52:16,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:52:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:52:16,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:52:16,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:52:16,342 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:52:16,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262690228] [2021-10-13 07:52:16,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262690228] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:52:16,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:52:16,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:52:16,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369527051] [2021-10-13 07:52:16,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:52:16,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:52:16,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:52:16,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:52:16,363 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:16,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:52:16,375 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2021-10-13 07:52:16,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:52:16,377 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 13 [2021-10-13 07:52:16,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:52:16,384 INFO L225 Difference]: With dead ends: 42 [2021-10-13 07:52:16,385 INFO L226 Difference]: Without dead ends: 19 [2021-10-13 07:52:16,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:52:16,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-13 07:52:16,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-13 07:52:16,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:16,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-10-13 07:52:16,414 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13 [2021-10-13 07:52:16,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:52:16,415 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-10-13 07:52:16,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:16,416 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-10-13 07:52:16,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:52:16,416 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:52:16,417 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:52:16,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:52:16,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:52:16,628 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:52:16,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:52:16,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1238662774, now seen corresponding path program 1 times [2021-10-13 07:52:16,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:52:16,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575981686] [2021-10-13 07:52:16,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:52:16,631 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:52:16,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:52:16,633 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:52:16,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:52:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:52:16,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:52:16,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:52:16,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:52:16,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:52:17,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:52:17,073 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:52:17,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575981686] [2021-10-13 07:52:17,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575981686] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:52:17,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:52:17,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 07:52:17,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052012392] [2021-10-13 07:52:17,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:52:17,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:52:17,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:52:17,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:52:17,078 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:17,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:52:17,571 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2021-10-13 07:52:17,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:52:17,572 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 07:52:17,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:52:17,574 INFO L225 Difference]: With dead ends: 39 [2021-10-13 07:52:17,574 INFO L226 Difference]: Without dead ends: 27 [2021-10-13 07:52:17,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 229.1ms TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:52:17,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-13 07:52:17,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-10-13 07:52:17,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 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) [2021-10-13 07:52:17,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-13 07:52:17,582 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2021-10-13 07:52:17,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:52:17,583 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-13 07:52:17,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:52:17,584 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-13 07:52:17,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 07:52:17,585 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:52:17,585 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:52:17,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:52:17,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:52:17,798 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:52:17,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:52:17,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1944018757, now seen corresponding path program 1 times [2021-10-13 07:52:17,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:52:17,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464427553] [2021-10-13 07:52:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:52:17,803 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:52:17,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:52:17,804 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:52:17,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:52:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:52:17,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 07:52:17,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:52:18,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 10 [2021-10-13 07:52:18,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:52:18,195 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-10-13 07:52:18,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2021-10-13 07:52:18,289 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-13 07:52:18,290 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 1 case distinctions, treesize of input 36 treesize of output 38 [2021-10-13 07:52:18,816 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-13 07:52:18,816 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 1 case distinctions, treesize of input 45 treesize of output 39 [2021-10-13 07:52:19,293 INFO L354 Elim1Store]: treesize reduction 134, result has 13.5 percent of original size [2021-10-13 07:52:19,293 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 88 treesize of output 53 [2021-10-13 07:52:19,655 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-10-13 07:52:19,655 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 102 treesize of output 68 [2021-10-13 07:52:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:52:19,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:52:27,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:52:27,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:52:27,893 INFO L354 Elim1Store]: treesize reduction 87, result has 26.3 percent of original size [2021-10-13 07:52:27,894 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 835 treesize of output 529 [2021-10-13 07:52:27,922 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 07:52:27,923 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 529 treesize of output 507 [2021-10-13 07:52:27,953 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-13 07:52:27,954 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 667 treesize of output 661 [2021-10-13 07:52:27,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 649 treesize of output 647 [2021-10-13 07:52:28,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 643 treesize of output 641 [2021-10-13 07:52:28,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:52:28,592 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:52:28,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464427553] [2021-10-13 07:52:28,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464427553] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:52:28,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1595088326] [2021-10-13 07:52:28,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:52:28,594 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:52:28,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:52:28,599 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:52:28,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-13 07:52:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:52:28,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 07:52:28,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:52:29,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:52:29,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:52:29,043 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 20 treesize of output 21 [2021-10-13 07:52:29,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:52:29,324 INFO L354 Elim1Store]: treesize reduction 44, result has 49.4 percent of original size [2021-10-13 07:52:29,325 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 36 treesize of output 64 [2021-10-13 07:52:30,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:52:42,694 WARN L207 SmtUtils]: Spent 12.38 s on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2021-10-13 07:52:42,695 INFO L354 Elim1Store]: treesize reduction 80, result has 59.2 percent of original size [2021-10-13 07:52:42,696 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 9 case distinctions, treesize of input 53 treesize of output 142 [2021-10-13 07:52:44,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-13 07:52:44,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748367119] [2021-10-13 07:52:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:52:44,252 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:52:44,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:52:44,258 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:52:44,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 07:52:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:52:44,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 07:52:44,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:52:44,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:52:44,497 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-10-13 07:52:44,498 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 20 treesize of output 21 [2021-10-13 07:52:44,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2021-10-13 07:52:44,549 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-13 07:52:44,550 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 1 case distinctions, treesize of input 36 treesize of output 38 [2021-10-13 07:52:45,301 INFO L354 Elim1Store]: treesize reduction 32, result has 42.9 percent of original size [2021-10-13 07:52:45,302 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 3 case distinctions, treesize of input 53 treesize of output 66 [2021-10-13 07:52:45,330 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-13 07:52:45,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:52:45,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-10-13 07:52:45,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340200024] [2021-10-13 07:52:45,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 07:52:45,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:52:45,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 07:52:45,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=661, Unknown=2, NotChecked=0, Total=812 [2021-10-13 07:52:45,334 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 24 states, 24 states have (on average 1.625) internal successors, (39), 24 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) [2021-10-13 07:53:08,184 WARN L207 SmtUtils]: Spent 15.01 s on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-10-13 07:53:29,259 WARN L207 SmtUtils]: Spent 20.57 s on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2021-10-13 07:53:43,194 WARN L207 SmtUtils]: Spent 10.37 s on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2021-10-13 07:53:46,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:53:46,566 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2021-10-13 07:53:46,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 07:53:46,568 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 24 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 21 [2021-10-13 07:53:46,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:53:46,571 INFO L225 Difference]: With dead ends: 81 [2021-10-13 07:53:46,571 INFO L226 Difference]: Without dead ends: 70 [2021-10-13 07:53:46,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 64659.8ms TimeCoverageRelationStatistics Valid=426, Invalid=1922, Unknown=4, NotChecked=0, Total=2352 [2021-10-13 07:53:46,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-13 07:53:46,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 38. [2021-10-13 07:53:46,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 37 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:46,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2021-10-13 07:53:46,585 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 21 [2021-10-13 07:53:46,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:53:46,586 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2021-10-13 07:53:46,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 24 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) [2021-10-13 07:53:46,587 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2021-10-13 07:53:46,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 07:53:46,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:46,588 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:53:46,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-10-13 07:53:46,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:47,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-13 07:53:47,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:53:47,191 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:53:47,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:47,192 INFO L82 PathProgramCache]: Analyzing trace with hash 2001277059, now seen corresponding path program 1 times [2021-10-13 07:53:47,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:53:47,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124261002] [2021-10-13 07:53:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:47,192 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:53:47,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:53:47,196 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:53:47,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:53:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:47,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:53:47,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:47,375 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 07:53:47,442 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 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-13 07:53:47,505 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 15 treesize of output 7 [2021-10-13 07:53:47,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:47,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:47,705 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 14 treesize of output 12 [2021-10-13 07:53:47,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 20 [2021-10-13 07:53:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:47,752 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:53:47,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124261002] [2021-10-13 07:53:47,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124261002] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:53:47,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1607975563] [2021-10-13 07:53:47,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:47,753 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:53:47,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:53:47,758 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:53:47,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-13 07:53:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:47,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:53:47,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:48,027 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 07:53:48,176 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 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-13 07:53:48,305 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 15 treesize of output 7 [2021-10-13 07:53:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:48,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:48,406 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 14 treesize of output 12 [2021-10-13 07:53:48,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 20 [2021-10-13 07:53:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:48,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1607975563] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:53:48,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942285628] [2021-10-13 07:53:48,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:48,427 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:53:48,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:53:48,446 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:53:48,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 07:53:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:48,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:53:48,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:48,804 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 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-13 07:53:48,858 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 15 treesize of output 7 [2021-10-13 07:53:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:53:48,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:49,024 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 37 treesize of output 31 [2021-10-13 07:53:49,032 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-13 07:53:49,032 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 44 treesize of output 30 [2021-10-13 07:53:49,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:53:49,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942285628] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:53:49,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:53:49,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 7] total 19 [2021-10-13 07:53:49,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069782110] [2021-10-13 07:53:49,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 07:53:49,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:53:49,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 07:53:49,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-10-13 07:53:49,054 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:50,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:53:50,510 INFO L93 Difference]: Finished difference Result 67 states and 88 transitions. [2021-10-13 07:53:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 07:53:50,519 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 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 21 [2021-10-13 07:53:50,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:53:50,521 INFO L225 Difference]: With dead ends: 67 [2021-10-13 07:53:50,521 INFO L226 Difference]: Without dead ends: 51 [2021-10-13 07:53:50,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 626.1ms TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2021-10-13 07:53:50,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-13 07:53:50,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2021-10-13 07:53:50,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:50,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2021-10-13 07:53:50,533 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 21 [2021-10-13 07:53:50,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:53:50,534 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2021-10-13 07:53:50,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:50,534 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2021-10-13 07:53:50,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 07:53:50,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:50,536 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:53:50,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:50,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:50,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:51,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:53:51,142 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:53:51,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:51,142 INFO L82 PathProgramCache]: Analyzing trace with hash -823792505, now seen corresponding path program 2 times [2021-10-13 07:53:51,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:53:51,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957031122] [2021-10-13 07:53:51,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:53:51,143 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:53:51,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:53:51,145 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:53:51,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:53:51,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:53:51,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:53:51,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:53:51,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:51,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:53:51,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:52,287 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:53:52,288 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:53:52,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957031122] [2021-10-13 07:53:52,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957031122] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:53:52,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1457946927] [2021-10-13 07:53:52,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:53:52,289 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:53:52,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:53:52,290 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:53:52,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-13 07:53:52,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:53:52,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:53:52,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 07:53:52,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:53:52,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:53:53,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1457946927] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:53:53,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228460139] [2021-10-13 07:53:53,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:53:53,169 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:53:53,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:53:53,190 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:53:53,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 07:53:53,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:53:53,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:53:53,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:53:53,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:53:53,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:53:53,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228460139] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:53:53,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:53:53,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9, 7, 9, 7] total 22 [2021-10-13 07:53:53,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537135370] [2021-10-13 07:53:53,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 07:53:53,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:53:53,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 07:53:53,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-10-13 07:53:53,764 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 22 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:55,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:53:55,665 INFO L93 Difference]: Finished difference Result 101 states and 130 transitions. [2021-10-13 07:53:55,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 07:53:55,666 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 22 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 07:53:55,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:53:55,667 INFO L225 Difference]: With dead ends: 101 [2021-10-13 07:53:55,667 INFO L226 Difference]: Without dead ends: 83 [2021-10-13 07:53:55,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1173.8ms TimeCoverageRelationStatistics Valid=325, Invalid=797, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 07:53:55,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-13 07:53:55,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 65. [2021-10-13 07:53:55,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.25) internal successors, (80), 64 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:55,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2021-10-13 07:53:55,684 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 23 [2021-10-13 07:53:55,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:53:55,685 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2021-10-13 07:53:55,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 22 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:55,685 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2021-10-13 07:53:55,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 07:53:55,687 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:55,687 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:53:55,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:55,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:56,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:56,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:53:56,301 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:53:56,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:56,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1832157868, now seen corresponding path program 3 times [2021-10-13 07:53:56,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:53:56,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260465247] [2021-10-13 07:53:56,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:53:56,302 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:53:56,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:53:56,303 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:53:56,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 07:53:56,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 07:53:56,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:53:56,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:53:56,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:56,949 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:53:56,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:57,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:53:57,174 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:53:57,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260465247] [2021-10-13 07:53:57,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260465247] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:53:57,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1709410631] [2021-10-13 07:53:57,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:53:57,175 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:53:57,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:53:57,176 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:53:57,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-13 07:53:57,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 07:53:57,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:53:57,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 07:53:57,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:57,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:53:57,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:57,913 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:53:57,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1709410631] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:53:57,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37814098] [2021-10-13 07:53:57,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:53:57,913 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:53:57,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:53:57,914 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:53:57,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 07:53:58,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 07:53:58,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:53:58,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:53:58,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:58,470 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:53:58,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:58,600 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:53:58,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37814098] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:53:58,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:53:58,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9, 7, 9, 7] total 14 [2021-10-13 07:53:58,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632290247] [2021-10-13 07:53:58,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 07:53:58,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:53:58,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 07:53:58,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:53:58,603 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:59,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:53:59,763 INFO L93 Difference]: Finished difference Result 93 states and 115 transitions. [2021-10-13 07:53:59,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:53:59,764 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 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 24 [2021-10-13 07:53:59,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:53:59,765 INFO L225 Difference]: With dead ends: 93 [2021-10-13 07:53:59,765 INFO L226 Difference]: Without dead ends: 59 [2021-10-13 07:53:59,765 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 533.9ms TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-10-13 07:53:59,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-13 07:53:59,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2021-10-13 07:53:59,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 56 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:59,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2021-10-13 07:53:59,778 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 24 [2021-10-13 07:53:59,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:53:59,778 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2021-10-13 07:53:59,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:59,779 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2021-10-13 07:53:59,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 07:53:59,780 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:59,788 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:53:59,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-13 07:54:00,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:54:00,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 07:54:00,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:54:00,401 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:54:00,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:00,402 INFO L82 PathProgramCache]: Analyzing trace with hash -14433298, now seen corresponding path program 4 times [2021-10-13 07:54:00,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:54:00,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023292423] [2021-10-13 07:54:00,402 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 07:54:00,403 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:54:00,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:54:00,404 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:54:00,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 07:54:00,775 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 07:54:00,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:54:00,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-13 07:54:00,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:00,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 10 [2021-10-13 07:54:00,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:54:00,913 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-10-13 07:54:00,913 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 1 case distinctions, treesize of input 20 treesize of output 21 [2021-10-13 07:54:00,988 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-13 07:54:00,989 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 1 case distinctions, treesize of input 36 treesize of output 38 [2021-10-13 07:54:01,202 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-10-13 07:54:01,202 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 2 case distinctions, treesize of input 48 treesize of output 53 [2021-10-13 07:54:01,789 INFO L354 Elim1Store]: treesize reduction 108, result has 10.7 percent of original size [2021-10-13 07:54:01,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 58 [2021-10-13 07:54:02,254 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-10-13 07:54:02,254 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 3 case distinctions, treesize of input 58 treesize of output 51 [2021-10-13 07:54:02,964 INFO L354 Elim1Store]: treesize reduction 73, result has 15.1 percent of original size [2021-10-13 07:54:02,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 75 [2021-10-13 07:54:03,438 INFO L354 Elim1Store]: treesize reduction 260, result has 10.3 percent of original size [2021-10-13 07:54:03,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 125 treesize of output 81 [2021-10-13 07:54:03,804 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-10-13 07:54:03,804 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 158 treesize of output 102 [2021-10-13 07:54:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:03,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:22,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:22,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:54:22,581 INFO L354 Elim1Store]: treesize reduction 624, result has 0.2 percent of original size [2021-10-13 07:54:22,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 3914456027 treesize of output 1 [2021-10-13 07:54:22,594 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:22,595 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:54:22,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023292423] [2021-10-13 07:54:22,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023292423] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:54:22,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [822067616] [2021-10-13 07:54:22,595 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 07:54:22,595 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:54:22,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:54:22,602 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:54:22,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-10-13 07:54:23,236 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 07:54:23,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:54:23,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 07:54:23,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:23,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:54:23,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:23,782 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 20 treesize of output 21 [2021-10-13 07:54:24,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:24,290 INFO L354 Elim1Store]: treesize reduction 44, result has 49.4 percent of original size [2021-10-13 07:54:24,290 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 36 treesize of output 64 [2021-10-13 07:54:25,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:25,143 INFO L354 Elim1Store]: treesize reduction 108, result has 25.0 percent of original size [2021-10-13 07:54:25,143 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 6 case distinctions, treesize of input 43 treesize of output 60 [2021-10-13 07:54:26,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:42,076 WARN L207 SmtUtils]: Spent 15.43 s on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2021-10-13 07:54:42,077 INFO L354 Elim1Store]: treesize reduction 150, result has 48.5 percent of original size [2021-10-13 07:54:42,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 62 treesize of output 170 [2021-10-13 07:55:01,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-13 07:55:01,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782620132] [2021-10-13 07:55:01,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 07:55:01,984 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:55:01,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:55:01,998 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:55:02,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 07:55:02,409 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 07:55:02,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:55:02,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 07:55:02,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:55:02,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:55:02,476 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-10-13 07:55:02,476 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 20 treesize of output 21 [2021-10-13 07:55:02,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2021-10-13 07:55:02,533 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-13 07:55:02,534 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 1 case distinctions, treesize of input 36 treesize of output 38 [2021-10-13 07:55:02,727 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-10-13 07:55:02,728 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 2 case distinctions, treesize of input 48 treesize of output 53 [2021-10-13 07:55:04,684 INFO L354 Elim1Store]: treesize reduction 72, result has 40.5 percent of original size [2021-10-13 07:55:04,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 94 [2021-10-13 07:55:04,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-13 07:55:04,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:55:04,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 38 [2021-10-13 07:55:04,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321922187] [2021-10-13 07:55:04,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-13 07:55:04,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:55:04,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-13 07:55:04,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1664, Unknown=1, NotChecked=0, Total=1980 [2021-10-13 07:55:04,914 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 38 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:43,274 WARN L207 SmtUtils]: Spent 23.02 s on a formula simplification. DAG size of input: 165 DAG size of output: 160 [2021-10-13 07:55:46,742 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse88 (bvmul c_ULTIMATE.start_main_~i~0 (_ bv4 32)))) (let ((.cse10 (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base)) (.cse37 (bvadd .cse88 c_ULTIMATE.start_main_~a~0.offset))) (let ((.cse79 (select .cse10 .cse37))) (let ((.cse21 (store .cse10 .cse37 (bvadd .cse79 (_ bv1 32))))) (let ((.cse1 ((_ sign_extend 32) (bvmul c_~N~0 (_ bv2 32)))) (.cse7 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~a~0.offset)) (.cse5 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#sum~0.offset|)) (.cse87 (select .cse21 c_ULTIMATE.start_main_~a~0.offset)) (.cse34 (bvslt (bvadd c_ULTIMATE.start_main_~i~0 (_ bv1 32)) c_~N~0))) (let ((.cse22 (bvadd (_ bv4 32) .cse88 c_ULTIMATE.start_main_~a~0.offset)) (.cse39 (bvslt (bvadd (_ bv2 32) c_ULTIMATE.start_main_~i~0) c_~N~0)) (.cse49 (not .cse34)) (.cse23 (bvsle c_~N~0 (_ bv536870911 32))) (.cse52 (not (= (_ bv2 32) .cse87))) (.cse53 (= .cse1 (let ((.cse83 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse21))) (let ((.cse85 (select .cse83 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse86 (bvadd (concat (select .cse85 .cse5) (select .cse85 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) .cse87)))) (let ((.cse84 ((_ extract 63 32) .cse86))) (let ((.cse81 (store (store .cse85 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse86)) .cse5 .cse84))) (let ((.cse82 (bvadd ((_ sign_extend 32) (select (select (store .cse83 |c_ULTIMATE.start_main_~#sum~0.base| .cse81) c_ULTIMATE.start_main_~a~0.base) .cse7)) (concat .cse84 (select .cse81 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse80 ((_ extract 63 32) .cse82))) (concat .cse80 (select (store (store .cse81 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse82)) .cse5 .cse80) |c_ULTIMATE.start_main_~#sum~0.offset|)))))))))))) (and (let ((.cse0 (select .cse10 c_ULTIMATE.start_main_~a~0.offset))) (or (not (= (_ bv2 32) .cse0)) (= .cse1 (let ((.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse9 (bvadd ((_ sign_extend 32) .cse0) (concat (select .cse8 .cse5) (select .cse8 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse6 ((_ extract 63 32) .cse9))) (let ((.cse3 (store (store .cse8 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse9)) .cse5 .cse6))) (let ((.cse4 (bvadd (concat .cse6 (select .cse3 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0.base| .cse3) c_ULTIMATE.start_main_~a~0.base) .cse7))))) (let ((.cse2 ((_ extract 63 32) .cse4))) (concat .cse2 (select (store (store .cse3 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse4)) .cse5 .cse2) |c_ULTIMATE.start_main_~#sum~0.offset|))))))))))) (let ((.cse11 (select .cse21 .cse22))) (let ((.cse20 (store .cse21 .cse22 (bvadd .cse11 (_ bv1 32))))) (let ((.cse12 (select .cse20 c_ULTIMATE.start_main_~a~0.offset))) (or (not (= .cse11 (_ bv1 32))) (not (= .cse12 (_ bv2 32))) (= .cse1 (let ((.cse17 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse20))) (let ((.cse18 (select .cse17 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse19 (bvadd ((_ sign_extend 32) .cse12) (concat (select .cse18 .cse5) (select .cse18 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse16 ((_ extract 63 32) .cse19))) (let ((.cse14 (store (store .cse18 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse19)) .cse5 .cse16))) (let ((.cse15 (bvadd (concat .cse16 (select .cse14 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0.base| .cse14) c_ULTIMATE.start_main_~a~0.base) .cse7))))) (let ((.cse13 ((_ extract 63 32) .cse15))) (concat .cse13 (select (store (store .cse14 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse15)) .cse5 .cse13) |c_ULTIMATE.start_main_~#sum~0.offset|)))))))))))))) (or (and (not .cse23) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse23)) (let ((.cse35 (let ((.cse36 (store .cse10 .cse37 (_ bv1 32)))) (store .cse36 c_ULTIMATE.start_main_~a~0.offset (bvadd (select .cse36 c_ULTIMATE.start_main_~a~0.offset) (_ bv1 32)))))) (let ((.cse33 (select .cse35 .cse7))) (let ((.cse32 (store .cse35 .cse7 (bvadd .cse33 (_ bv1 32))))) (let ((.cse31 (select .cse32 c_ULTIMATE.start_main_~a~0.offset))) (or (= .cse1 (let ((.cse27 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse32))) (let ((.cse29 (select .cse27 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse30 (bvadd (concat (select .cse29 .cse5) (select .cse29 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) .cse31)))) (let ((.cse28 ((_ extract 63 32) .cse30))) (let ((.cse25 (store (store .cse29 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse30)) .cse5 .cse28))) (let ((.cse26 (bvadd ((_ sign_extend 32) (select (select (store .cse27 |c_ULTIMATE.start_main_~#sum~0.base| .cse25) c_ULTIMATE.start_main_~a~0.base) .cse7)) (concat .cse28 (select .cse25 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse24 ((_ extract 63 32) .cse26))) (concat .cse24 (select (store (store .cse25 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse26)) .cse5 .cse24) |c_ULTIMATE.start_main_~#sum~0.offset|)))))))))) (not (= .cse33 (_ bv1 32))) .cse34 (not (= (_ bv2 32) .cse31)) (not (bvslt c_ULTIMATE.start_main_~i~0 c_~N~0))))))) (let ((.cse50 (let ((.cse51 (store .cse10 .cse22 (_ bv1 32)))) (store .cse51 c_ULTIMATE.start_main_~a~0.offset (bvadd (select .cse51 c_ULTIMATE.start_main_~a~0.offset) (_ bv1 32)))))) (let ((.cse38 (select .cse50 .cse7))) (let ((.cse48 (store .cse50 .cse7 (bvadd .cse38 (_ bv1 32))))) (let ((.cse47 (select .cse48 c_ULTIMATE.start_main_~a~0.offset))) (or (not (= .cse38 (_ bv1 32))) .cse39 (= .cse1 (let ((.cse43 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse48))) (let ((.cse45 (select .cse43 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse46 (bvadd (concat (select .cse45 .cse5) (select .cse45 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) .cse47)))) (let ((.cse44 ((_ extract 63 32) .cse46))) (let ((.cse41 (store (store .cse45 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse46)) .cse5 .cse44))) (let ((.cse42 (bvadd ((_ sign_extend 32) (select (select (store .cse43 |c_ULTIMATE.start_main_~#sum~0.base| .cse41) c_ULTIMATE.start_main_~a~0.base) .cse7)) (concat .cse44 (select .cse41 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse40 ((_ extract 63 32) .cse42))) (concat .cse40 (select (store (store .cse41 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse42)) .cse5 .cse40) |c_ULTIMATE.start_main_~#sum~0.offset|)))))))))) (not (= (_ bv2 32) .cse47)) .cse49))))) (not (bvsle c_~N~0 (_ bv0 32))) (or (not (= |c_ULTIMATE.start_main_#t~mem11| (_ bv1 32))) .cse52 .cse53) (let ((.cse54 (select .cse10 .cse22))) (let ((.cse63 (store .cse10 .cse22 (bvadd .cse54 (_ bv1 32))))) (let ((.cse62 (select .cse63 c_ULTIMATE.start_main_~a~0.offset))) (or (not (= .cse54 (_ bv1 32))) (= .cse1 (let ((.cse59 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse63))) (let ((.cse60 (select .cse59 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse61 (bvadd (concat (select .cse60 .cse5) (select .cse60 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) .cse62)))) (let ((.cse58 ((_ extract 63 32) .cse61))) (let ((.cse56 (store (store .cse60 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse61)) .cse5 .cse58))) (let ((.cse57 (bvadd (concat .cse58 (select .cse56 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) (select (select (store .cse59 |c_ULTIMATE.start_main_~#sum~0.base| .cse56) c_ULTIMATE.start_main_~a~0.base) .cse7))))) (let ((.cse55 ((_ extract 63 32) .cse57))) (concat .cse55 (select (store (store .cse56 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse57)) .cse5 .cse55) |c_ULTIMATE.start_main_~#sum~0.offset|)))))))))) (not (= (_ bv2 32) .cse62)))))) (or .cse39 (forall ((ULTIMATE.start_main_~a~0.offset (_ BitVec 32))) (let ((.cse76 (let ((.cse77 (let ((.cse78 (bvmul c_ULTIMATE.start_main_~i~0 (_ bv4 32)))) (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base) (bvadd .cse78 ULTIMATE.start_main_~a~0.offset) (_ bv1 32)) (bvadd (_ bv4 32) .cse78 ULTIMATE.start_main_~a~0.offset) (_ bv1 32))))) (store .cse77 ULTIMATE.start_main_~a~0.offset (bvadd (select .cse77 ULTIMATE.start_main_~a~0.offset) (_ bv1 32))))) (.cse69 (bvadd (_ bv4 32) ULTIMATE.start_main_~a~0.offset))) (let ((.cse75 (select .cse76 .cse69))) (let ((.cse74 (store .cse76 .cse69 (bvadd .cse75 (_ bv1 32))))) (let ((.cse73 (select .cse74 ULTIMATE.start_main_~a~0.offset))) (or (= ((_ sign_extend 32) (bvmul c_~N~0 (_ bv2 32))) (let ((.cse68 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse74))) (let ((.cse67 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#sum~0.offset|)) (.cse71 (select .cse68 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse72 (bvadd (concat (select .cse71 .cse67) (select .cse71 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) .cse73)))) (let ((.cse70 ((_ extract 63 32) .cse72))) (let ((.cse65 (store (store .cse71 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse72)) .cse67 .cse70))) (let ((.cse66 (bvadd ((_ sign_extend 32) (select (select (store .cse68 |c_ULTIMATE.start_main_~#sum~0.base| .cse65) c_ULTIMATE.start_main_~a~0.base) .cse69)) (concat .cse70 (select .cse65 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse64 ((_ extract 63 32) .cse66))) (concat .cse64 (select (store (store .cse65 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse66)) .cse67 .cse64) |c_ULTIMATE.start_main_~#sum~0.offset|)))))))))) (not (= (_ bv2 32) .cse73)) (not (= .cse75 (_ bv1 32))))))))) .cse49) .cse23 (or (not (= .cse79 (_ bv1 32))) .cse52 .cse53)))))))) is different from false [2021-10-13 07:55:48,756 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse88 (bvmul c_ULTIMATE.start_main_~i~0 (_ bv4 32)))) (let ((.cse10 (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base)) (.cse37 (bvadd .cse88 c_ULTIMATE.start_main_~a~0.offset))) (let ((.cse79 (select .cse10 .cse37))) (let ((.cse21 (store .cse10 .cse37 (bvadd .cse79 (_ bv1 32))))) (let ((.cse1 ((_ sign_extend 32) (bvmul c_~N~0 (_ bv2 32)))) (.cse7 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~a~0.offset)) (.cse5 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#sum~0.offset|)) (.cse87 (select .cse21 c_ULTIMATE.start_main_~a~0.offset)) (.cse34 (bvslt (bvadd c_ULTIMATE.start_main_~i~0 (_ bv1 32)) c_~N~0))) (let ((.cse22 (bvadd (_ bv4 32) .cse88 c_ULTIMATE.start_main_~a~0.offset)) (.cse39 (bvslt (bvadd (_ bv2 32) c_ULTIMATE.start_main_~i~0) c_~N~0)) (.cse49 (not .cse34)) (.cse23 (bvsle c_~N~0 (_ bv536870911 32))) (.cse52 (not (= (_ bv2 32) .cse87))) (.cse53 (= .cse1 (let ((.cse83 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse21))) (let ((.cse85 (select .cse83 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse86 (bvadd (concat (select .cse85 .cse5) (select .cse85 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) .cse87)))) (let ((.cse84 ((_ extract 63 32) .cse86))) (let ((.cse81 (store (store .cse85 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse86)) .cse5 .cse84))) (let ((.cse82 (bvadd ((_ sign_extend 32) (select (select (store .cse83 |c_ULTIMATE.start_main_~#sum~0.base| .cse81) c_ULTIMATE.start_main_~a~0.base) .cse7)) (concat .cse84 (select .cse81 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse80 ((_ extract 63 32) .cse82))) (concat .cse80 (select (store (store .cse81 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse82)) .cse5 .cse80) |c_ULTIMATE.start_main_~#sum~0.offset|)))))))))))) (and (let ((.cse0 (select .cse10 c_ULTIMATE.start_main_~a~0.offset))) (or (not (= (_ bv2 32) .cse0)) (= .cse1 (let ((.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse9 (bvadd ((_ sign_extend 32) .cse0) (concat (select .cse8 .cse5) (select .cse8 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse6 ((_ extract 63 32) .cse9))) (let ((.cse3 (store (store .cse8 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse9)) .cse5 .cse6))) (let ((.cse4 (bvadd (concat .cse6 (select .cse3 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0.base| .cse3) c_ULTIMATE.start_main_~a~0.base) .cse7))))) (let ((.cse2 ((_ extract 63 32) .cse4))) (concat .cse2 (select (store (store .cse3 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse4)) .cse5 .cse2) |c_ULTIMATE.start_main_~#sum~0.offset|))))))))))) (let ((.cse11 (select .cse21 .cse22))) (let ((.cse20 (store .cse21 .cse22 (bvadd .cse11 (_ bv1 32))))) (let ((.cse12 (select .cse20 c_ULTIMATE.start_main_~a~0.offset))) (or (not (= .cse11 (_ bv1 32))) (not (= .cse12 (_ bv2 32))) (= .cse1 (let ((.cse17 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse20))) (let ((.cse18 (select .cse17 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse19 (bvadd ((_ sign_extend 32) .cse12) (concat (select .cse18 .cse5) (select .cse18 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse16 ((_ extract 63 32) .cse19))) (let ((.cse14 (store (store .cse18 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse19)) .cse5 .cse16))) (let ((.cse15 (bvadd (concat .cse16 (select .cse14 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0.base| .cse14) c_ULTIMATE.start_main_~a~0.base) .cse7))))) (let ((.cse13 ((_ extract 63 32) .cse15))) (concat .cse13 (select (store (store .cse14 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse15)) .cse5 .cse13) |c_ULTIMATE.start_main_~#sum~0.offset|)))))))))))))) (or (and (not .cse23) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse23)) (let ((.cse35 (let ((.cse36 (store .cse10 .cse37 (_ bv1 32)))) (store .cse36 c_ULTIMATE.start_main_~a~0.offset (bvadd (select .cse36 c_ULTIMATE.start_main_~a~0.offset) (_ bv1 32)))))) (let ((.cse33 (select .cse35 .cse7))) (let ((.cse32 (store .cse35 .cse7 (bvadd .cse33 (_ bv1 32))))) (let ((.cse31 (select .cse32 c_ULTIMATE.start_main_~a~0.offset))) (or (= .cse1 (let ((.cse27 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse32))) (let ((.cse29 (select .cse27 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse30 (bvadd (concat (select .cse29 .cse5) (select .cse29 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) .cse31)))) (let ((.cse28 ((_ extract 63 32) .cse30))) (let ((.cse25 (store (store .cse29 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse30)) .cse5 .cse28))) (let ((.cse26 (bvadd ((_ sign_extend 32) (select (select (store .cse27 |c_ULTIMATE.start_main_~#sum~0.base| .cse25) c_ULTIMATE.start_main_~a~0.base) .cse7)) (concat .cse28 (select .cse25 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse24 ((_ extract 63 32) .cse26))) (concat .cse24 (select (store (store .cse25 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse26)) .cse5 .cse24) |c_ULTIMATE.start_main_~#sum~0.offset|)))))))))) (not (= .cse33 (_ bv1 32))) .cse34 (not (= (_ bv2 32) .cse31)) (not (bvslt c_ULTIMATE.start_main_~i~0 c_~N~0))))))) (let ((.cse50 (let ((.cse51 (store .cse10 .cse22 (_ bv1 32)))) (store .cse51 c_ULTIMATE.start_main_~a~0.offset (bvadd (select .cse51 c_ULTIMATE.start_main_~a~0.offset) (_ bv1 32)))))) (let ((.cse38 (select .cse50 .cse7))) (let ((.cse48 (store .cse50 .cse7 (bvadd .cse38 (_ bv1 32))))) (let ((.cse47 (select .cse48 c_ULTIMATE.start_main_~a~0.offset))) (or (not (= .cse38 (_ bv1 32))) .cse39 (= .cse1 (let ((.cse43 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse48))) (let ((.cse45 (select .cse43 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse46 (bvadd (concat (select .cse45 .cse5) (select .cse45 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) .cse47)))) (let ((.cse44 ((_ extract 63 32) .cse46))) (let ((.cse41 (store (store .cse45 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse46)) .cse5 .cse44))) (let ((.cse42 (bvadd ((_ sign_extend 32) (select (select (store .cse43 |c_ULTIMATE.start_main_~#sum~0.base| .cse41) c_ULTIMATE.start_main_~a~0.base) .cse7)) (concat .cse44 (select .cse41 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse40 ((_ extract 63 32) .cse42))) (concat .cse40 (select (store (store .cse41 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse42)) .cse5 .cse40) |c_ULTIMATE.start_main_~#sum~0.offset|)))))))))) (not (= (_ bv2 32) .cse47)) .cse49))))) (not (bvsle c_~N~0 (_ bv0 32))) (or (not (= |c_ULTIMATE.start_main_#t~mem11| (_ bv1 32))) .cse52 .cse53) (let ((.cse54 (select .cse10 .cse22))) (let ((.cse63 (store .cse10 .cse22 (bvadd .cse54 (_ bv1 32))))) (let ((.cse62 (select .cse63 c_ULTIMATE.start_main_~a~0.offset))) (or (not (= .cse54 (_ bv1 32))) (= .cse1 (let ((.cse59 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse63))) (let ((.cse60 (select .cse59 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse61 (bvadd (concat (select .cse60 .cse5) (select .cse60 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) .cse62)))) (let ((.cse58 ((_ extract 63 32) .cse61))) (let ((.cse56 (store (store .cse60 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse61)) .cse5 .cse58))) (let ((.cse57 (bvadd (concat .cse58 (select .cse56 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) (select (select (store .cse59 |c_ULTIMATE.start_main_~#sum~0.base| .cse56) c_ULTIMATE.start_main_~a~0.base) .cse7))))) (let ((.cse55 ((_ extract 63 32) .cse57))) (concat .cse55 (select (store (store .cse56 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse57)) .cse5 .cse55) |c_ULTIMATE.start_main_~#sum~0.offset|)))))))))) (not (= (_ bv2 32) .cse62)))))) (or .cse39 (forall ((ULTIMATE.start_main_~a~0.offset (_ BitVec 32))) (let ((.cse76 (let ((.cse77 (let ((.cse78 (bvmul c_ULTIMATE.start_main_~i~0 (_ bv4 32)))) (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base) (bvadd .cse78 ULTIMATE.start_main_~a~0.offset) (_ bv1 32)) (bvadd (_ bv4 32) .cse78 ULTIMATE.start_main_~a~0.offset) (_ bv1 32))))) (store .cse77 ULTIMATE.start_main_~a~0.offset (bvadd (select .cse77 ULTIMATE.start_main_~a~0.offset) (_ bv1 32))))) (.cse69 (bvadd (_ bv4 32) ULTIMATE.start_main_~a~0.offset))) (let ((.cse75 (select .cse76 .cse69))) (let ((.cse74 (store .cse76 .cse69 (bvadd .cse75 (_ bv1 32))))) (let ((.cse73 (select .cse74 ULTIMATE.start_main_~a~0.offset))) (or (= ((_ sign_extend 32) (bvmul c_~N~0 (_ bv2 32))) (let ((.cse68 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse74))) (let ((.cse67 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#sum~0.offset|)) (.cse71 (select .cse68 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse72 (bvadd (concat (select .cse71 .cse67) (select .cse71 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) .cse73)))) (let ((.cse70 ((_ extract 63 32) .cse72))) (let ((.cse65 (store (store .cse71 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse72)) .cse67 .cse70))) (let ((.cse66 (bvadd ((_ sign_extend 32) (select (select (store .cse68 |c_ULTIMATE.start_main_~#sum~0.base| .cse65) c_ULTIMATE.start_main_~a~0.base) .cse69)) (concat .cse70 (select .cse65 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse64 ((_ extract 63 32) .cse66))) (concat .cse64 (select (store (store .cse65 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse66)) .cse67 .cse64) |c_ULTIMATE.start_main_~#sum~0.offset|)))))))))) (not (= (_ bv2 32) .cse73)) (not (= .cse75 (_ bv1 32))))))))) .cse49) .cse23 (or (not (= .cse79 (_ bv1 32))) .cse52 .cse53)))))))) is different from true [2021-10-13 07:56:29,915 WARN L207 SmtUtils]: Spent 14.15 s on a formula simplification. DAG size of input: 154 DAG size of output: 111 [2021-10-13 07:56:50,634 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse50 (bvmul c_ULTIMATE.start_main_~i~0 (_ bv4 32))) (.cse14 (bvslt (bvadd c_ULTIMATE.start_main_~i~0 (_ bv1 32)) c_~N~0))) (let ((.cse37 (bvslt (bvadd (_ bv2 32) c_ULTIMATE.start_main_~i~0) c_~N~0)) (.cse47 (not .cse14)) (.cse1 ((_ sign_extend 32) (bvmul c_~N~0 (_ bv2 32)))) (.cse7 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~a~0.offset)) (.cse5 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#sum~0.offset|)) (.cse17 (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base)) (.cse18 (bvadd .cse50 c_ULTIMATE.start_main_~a~0.offset))) (and (let ((.cse0 (bvsle c_~N~0 (_ bv536870911 32)))) (or (and (not .cse0) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse0))) (let ((.cse15 (let ((.cse16 (store .cse17 .cse18 (_ bv1 32)))) (store .cse16 c_ULTIMATE.start_main_~a~0.offset (bvadd (select .cse16 c_ULTIMATE.start_main_~a~0.offset) (_ bv1 32)))))) (let ((.cse13 (select .cse15 .cse7))) (let ((.cse12 (store .cse15 .cse7 (bvadd .cse13 (_ bv1 32))))) (let ((.cse11 (select .cse12 c_ULTIMATE.start_main_~a~0.offset))) (or (= .cse1 (let ((.cse6 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse12))) (let ((.cse9 (select .cse6 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse10 (bvadd (concat (select .cse9 .cse5) (select .cse9 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) .cse11)))) (let ((.cse8 ((_ extract 63 32) .cse10))) (let ((.cse3 (store (store .cse9 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse10)) .cse5 .cse8))) (let ((.cse4 (bvadd ((_ sign_extend 32) (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0.base| .cse3) c_ULTIMATE.start_main_~a~0.base) .cse7)) (concat .cse8 (select .cse3 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse2 ((_ extract 63 32) .cse4))) (concat .cse2 (select (store (store .cse3 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse4)) .cse5 .cse2) |c_ULTIMATE.start_main_~#sum~0.offset|)))))))))) (not (= .cse13 (_ bv1 32))) .cse14 (not (= (_ bv2 32) .cse11)) (not (bvslt c_ULTIMATE.start_main_~i~0 c_~N~0))))))) (let ((.cse29 (store .cse17 c_ULTIMATE.start_main_~a~0.offset (bvadd (select .cse17 c_ULTIMATE.start_main_~a~0.offset) (_ bv1 32))))) (let ((.cse28 (select .cse29 .cse7))) (let ((.cse27 (store .cse29 .cse7 (bvadd .cse28 (_ bv1 32))))) (let ((.cse26 (select .cse27 c_ULTIMATE.start_main_~a~0.offset))) (or (= .cse1 (let ((.cse22 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse27))) (let ((.cse24 (select .cse22 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse25 (bvadd (concat (select .cse24 .cse5) (select .cse24 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) .cse26)))) (let ((.cse23 ((_ extract 63 32) .cse25))) (let ((.cse20 (store (store .cse24 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse25)) .cse5 .cse23))) (let ((.cse21 (bvadd ((_ sign_extend 32) (select (select (store .cse22 |c_ULTIMATE.start_main_~#sum~0.base| .cse20) c_ULTIMATE.start_main_~a~0.base) .cse7)) (concat .cse23 (select .cse20 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse19 ((_ extract 63 32) .cse21))) (concat .cse19 (select (store (store .cse20 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse21)) .cse5 .cse19) |c_ULTIMATE.start_main_~#sum~0.offset|)))))))))) (not (= .cse26 (_ bv2 32))) (not (= .cse28 (_ bv1 32)))))))) (exists ((ULTIMATE.start_main_~a~0.offset (_ BitVec 32)) (ULTIMATE.start_main_~a~0.base (_ BitVec 32))) (let ((.cse33 (select |c_#memory_int| ULTIMATE.start_main_~a~0.base))) (let ((.cse32 (select .cse33 ULTIMATE.start_main_~a~0.offset))) (let ((.cse30 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0.base|)) (.cse31 (bvadd (let ((.cse34 (bvadd ((_ sign_extend 32) .cse32) (let ((.cse35 ((_ sign_extend 32) (_ bv0 32)))) (concat ((_ extract 63 32) .cse35) ((_ extract 31 0) .cse35)))))) (concat ((_ extract 63 32) .cse34) ((_ extract 31 0) .cse34))) ((_ sign_extend 32) (_ bv2 32))))) (and (= (select .cse30 |c_ULTIMATE.start_main_~#sum~0.offset|) ((_ extract 31 0) .cse31)) (= (_ bv2 32) .cse32) (= (select .cse30 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ extract 63 32) .cse31)) (not (= ULTIMATE.start_main_~a~0.base |c_ULTIMATE.start_main_~#sum~0.base|)) (= (select .cse33 (bvadd (_ bv4 32) ULTIMATE.start_main_~a~0.offset)) (_ bv2 32))))))) (bvslt (_ bv1 32) c_~N~0) (let ((.cse48 (let ((.cse49 (store .cse17 (bvadd (_ bv4 32) .cse50 c_ULTIMATE.start_main_~a~0.offset) (_ bv1 32)))) (store .cse49 c_ULTIMATE.start_main_~a~0.offset (bvadd (select .cse49 c_ULTIMATE.start_main_~a~0.offset) (_ bv1 32)))))) (let ((.cse36 (select .cse48 .cse7))) (let ((.cse46 (store .cse48 .cse7 (bvadd .cse36 (_ bv1 32))))) (let ((.cse45 (select .cse46 c_ULTIMATE.start_main_~a~0.offset))) (or (not (= .cse36 (_ bv1 32))) .cse37 (= .cse1 (let ((.cse41 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse46))) (let ((.cse43 (select .cse41 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse44 (bvadd (concat (select .cse43 .cse5) (select .cse43 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) .cse45)))) (let ((.cse42 ((_ extract 63 32) .cse44))) (let ((.cse39 (store (store .cse43 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse44)) .cse5 .cse42))) (let ((.cse40 (bvadd ((_ sign_extend 32) (select (select (store .cse41 |c_ULTIMATE.start_main_~#sum~0.base| .cse39) c_ULTIMATE.start_main_~a~0.base) .cse7)) (concat .cse42 (select .cse39 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse38 ((_ extract 63 32) .cse40))) (concat .cse38 (select (store (store .cse39 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse40)) .cse5 .cse38) |c_ULTIMATE.start_main_~#sum~0.offset|)))))))))) (not (= (_ bv2 32) .cse45)) .cse47))))) (not (bvsle c_~N~0 (_ bv0 32))) (not (bvslt (_ bv2 32) c_~N~0)) (or .cse37 (forall ((ULTIMATE.start_main_~a~0.offset (_ BitVec 32))) (let ((.cse63 (let ((.cse64 (let ((.cse65 (bvmul c_ULTIMATE.start_main_~i~0 (_ bv4 32)))) (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base) (bvadd .cse65 ULTIMATE.start_main_~a~0.offset) (_ bv1 32)) (bvadd (_ bv4 32) .cse65 ULTIMATE.start_main_~a~0.offset) (_ bv1 32))))) (store .cse64 ULTIMATE.start_main_~a~0.offset (bvadd (select .cse64 ULTIMATE.start_main_~a~0.offset) (_ bv1 32))))) (.cse56 (bvadd (_ bv4 32) ULTIMATE.start_main_~a~0.offset))) (let ((.cse62 (select .cse63 .cse56))) (let ((.cse61 (store .cse63 .cse56 (bvadd .cse62 (_ bv1 32))))) (let ((.cse60 (select .cse61 ULTIMATE.start_main_~a~0.offset))) (or (= ((_ sign_extend 32) (bvmul c_~N~0 (_ bv2 32))) (let ((.cse55 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse61))) (let ((.cse54 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#sum~0.offset|)) (.cse58 (select .cse55 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse59 (bvadd (concat (select .cse58 .cse54) (select .cse58 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) .cse60)))) (let ((.cse57 ((_ extract 63 32) .cse59))) (let ((.cse52 (store (store .cse58 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse59)) .cse54 .cse57))) (let ((.cse53 (bvadd ((_ sign_extend 32) (select (select (store .cse55 |c_ULTIMATE.start_main_~#sum~0.base| .cse52) c_ULTIMATE.start_main_~a~0.base) .cse56)) (concat .cse57 (select .cse52 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse51 ((_ extract 63 32) .cse53))) (concat .cse51 (select (store (store .cse52 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse53)) .cse54 .cse51) |c_ULTIMATE.start_main_~#sum~0.offset|)))))))))) (not (= (_ bv2 32) .cse60)) (not (= .cse62 (_ bv1 32))))))))) .cse47) (let ((.cse66 (select .cse17 .cse18))) (let ((.cse75 (store .cse17 .cse18 (bvadd .cse66 (_ bv1 32))))) (let ((.cse67 (select .cse75 c_ULTIMATE.start_main_~a~0.offset))) (or (not (= .cse66 (_ bv1 32))) (not (= (_ bv2 32) .cse67)) (= .cse1 (let ((.cse71 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse75))) (let ((.cse73 (select .cse71 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse74 (bvadd (concat (select .cse73 .cse5) (select .cse73 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) .cse67)))) (let ((.cse72 ((_ extract 63 32) .cse74))) (let ((.cse69 (store (store .cse73 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse74)) .cse5 .cse72))) (let ((.cse70 (bvadd ((_ sign_extend 32) (select (select (store .cse71 |c_ULTIMATE.start_main_~#sum~0.base| .cse69) c_ULTIMATE.start_main_~a~0.base) .cse7)) (concat .cse72 (select .cse69 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse68 ((_ extract 63 32) .cse70))) (concat .cse68 (select (store (store .cse69 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse70)) .cse5 .cse68) |c_ULTIMATE.start_main_~#sum~0.offset|))))))))))))))))) is different from true [2021-10-13 07:56:57,349 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse44 (bvmul c_ULTIMATE.start_main_~i~0 (_ bv4 32))) (.cse14 (bvslt (bvadd c_ULTIMATE.start_main_~i~0 (_ bv1 32)) c_~N~0))) (let ((.cse31 (bvslt (bvadd (_ bv2 32) c_ULTIMATE.start_main_~i~0) c_~N~0)) (.cse41 (not .cse14)) (.cse0 (bvsle c_~N~0 (_ bv536870911 32))) (.cse1 ((_ sign_extend 32) (bvmul c_~N~0 (_ bv2 32)))) (.cse7 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~a~0.offset)) (.cse5 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#sum~0.offset|)) (.cse17 (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base)) (.cse18 (bvadd .cse44 c_ULTIMATE.start_main_~a~0.offset))) (and (or (and (not .cse0) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse0)) (let ((.cse15 (let ((.cse16 (store .cse17 .cse18 (_ bv1 32)))) (store .cse16 c_ULTIMATE.start_main_~a~0.offset (bvadd (select .cse16 c_ULTIMATE.start_main_~a~0.offset) (_ bv1 32)))))) (let ((.cse13 (select .cse15 .cse7))) (let ((.cse12 (store .cse15 .cse7 (bvadd .cse13 (_ bv1 32))))) (let ((.cse11 (select .cse12 c_ULTIMATE.start_main_~a~0.offset))) (or (= .cse1 (let ((.cse6 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse12))) (let ((.cse9 (select .cse6 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse10 (bvadd (concat (select .cse9 .cse5) (select .cse9 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) .cse11)))) (let ((.cse8 ((_ extract 63 32) .cse10))) (let ((.cse3 (store (store .cse9 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse10)) .cse5 .cse8))) (let ((.cse4 (bvadd ((_ sign_extend 32) (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0.base| .cse3) c_ULTIMATE.start_main_~a~0.base) .cse7)) (concat .cse8 (select .cse3 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse2 ((_ extract 63 32) .cse4))) (concat .cse2 (select (store (store .cse3 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse4)) .cse5 .cse2) |c_ULTIMATE.start_main_~#sum~0.offset|)))))))))) (not (= .cse13 (_ bv1 32))) .cse14 (not (= (_ bv2 32) .cse11)) (not (bvslt c_ULTIMATE.start_main_~i~0 c_~N~0))))))) (let ((.cse29 (store .cse17 c_ULTIMATE.start_main_~a~0.offset (bvadd (select .cse17 c_ULTIMATE.start_main_~a~0.offset) (_ bv1 32))))) (let ((.cse28 (select .cse29 .cse7))) (let ((.cse27 (store .cse29 .cse7 (bvadd .cse28 (_ bv1 32))))) (let ((.cse26 (select .cse27 c_ULTIMATE.start_main_~a~0.offset))) (or (= .cse1 (let ((.cse22 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse27))) (let ((.cse24 (select .cse22 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse25 (bvadd (concat (select .cse24 .cse5) (select .cse24 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) .cse26)))) (let ((.cse23 ((_ extract 63 32) .cse25))) (let ((.cse20 (store (store .cse24 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse25)) .cse5 .cse23))) (let ((.cse21 (bvadd ((_ sign_extend 32) (select (select (store .cse22 |c_ULTIMATE.start_main_~#sum~0.base| .cse20) c_ULTIMATE.start_main_~a~0.base) .cse7)) (concat .cse23 (select .cse20 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse19 ((_ extract 63 32) .cse21))) (concat .cse19 (select (store (store .cse20 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse21)) .cse5 .cse19) |c_ULTIMATE.start_main_~#sum~0.offset|)))))))))) (not (= .cse26 (_ bv2 32))) (not (= .cse28 (_ bv1 32)))))))) (let ((.cse42 (let ((.cse43 (store .cse17 (bvadd (_ bv4 32) .cse44 c_ULTIMATE.start_main_~a~0.offset) (_ bv1 32)))) (store .cse43 c_ULTIMATE.start_main_~a~0.offset (bvadd (select .cse43 c_ULTIMATE.start_main_~a~0.offset) (_ bv1 32)))))) (let ((.cse30 (select .cse42 .cse7))) (let ((.cse40 (store .cse42 .cse7 (bvadd .cse30 (_ bv1 32))))) (let ((.cse39 (select .cse40 c_ULTIMATE.start_main_~a~0.offset))) (or (not (= .cse30 (_ bv1 32))) .cse31 (= .cse1 (let ((.cse35 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse40))) (let ((.cse37 (select .cse35 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse38 (bvadd (concat (select .cse37 .cse5) (select .cse37 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) .cse39)))) (let ((.cse36 ((_ extract 63 32) .cse38))) (let ((.cse33 (store (store .cse37 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse38)) .cse5 .cse36))) (let ((.cse34 (bvadd ((_ sign_extend 32) (select (select (store .cse35 |c_ULTIMATE.start_main_~#sum~0.base| .cse33) c_ULTIMATE.start_main_~a~0.base) .cse7)) (concat .cse36 (select .cse33 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse32 ((_ extract 63 32) .cse34))) (concat .cse32 (select (store (store .cse33 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse34)) .cse5 .cse32) |c_ULTIMATE.start_main_~#sum~0.offset|)))))))))) (not (= (_ bv2 32) .cse39)) .cse41))))) (not (bvsle c_~N~0 (_ bv0 32))) (or .cse31 (forall ((ULTIMATE.start_main_~a~0.offset (_ BitVec 32))) (let ((.cse57 (let ((.cse58 (let ((.cse59 (bvmul c_ULTIMATE.start_main_~i~0 (_ bv4 32)))) (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base) (bvadd .cse59 ULTIMATE.start_main_~a~0.offset) (_ bv1 32)) (bvadd (_ bv4 32) .cse59 ULTIMATE.start_main_~a~0.offset) (_ bv1 32))))) (store .cse58 ULTIMATE.start_main_~a~0.offset (bvadd (select .cse58 ULTIMATE.start_main_~a~0.offset) (_ bv1 32))))) (.cse50 (bvadd (_ bv4 32) ULTIMATE.start_main_~a~0.offset))) (let ((.cse56 (select .cse57 .cse50))) (let ((.cse55 (store .cse57 .cse50 (bvadd .cse56 (_ bv1 32))))) (let ((.cse54 (select .cse55 ULTIMATE.start_main_~a~0.offset))) (or (= ((_ sign_extend 32) (bvmul c_~N~0 (_ bv2 32))) (let ((.cse49 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse55))) (let ((.cse48 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#sum~0.offset|)) (.cse52 (select .cse49 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse53 (bvadd (concat (select .cse52 .cse48) (select .cse52 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) .cse54)))) (let ((.cse51 ((_ extract 63 32) .cse53))) (let ((.cse46 (store (store .cse52 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse53)) .cse48 .cse51))) (let ((.cse47 (bvadd ((_ sign_extend 32) (select (select (store .cse49 |c_ULTIMATE.start_main_~#sum~0.base| .cse46) c_ULTIMATE.start_main_~a~0.base) .cse50)) (concat .cse51 (select .cse46 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse45 ((_ extract 63 32) .cse47))) (concat .cse45 (select (store (store .cse46 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse47)) .cse48 .cse45) |c_ULTIMATE.start_main_~#sum~0.offset|)))))))))) (not (= (_ bv2 32) .cse54)) (not (= .cse56 (_ bv1 32))))))))) .cse41) .cse0 (let ((.cse60 (select .cse17 .cse18))) (let ((.cse69 (store .cse17 .cse18 (bvadd .cse60 (_ bv1 32))))) (let ((.cse61 (select .cse69 c_ULTIMATE.start_main_~a~0.offset))) (or (not (= .cse60 (_ bv1 32))) (not (= (_ bv2 32) .cse61)) (= .cse1 (let ((.cse65 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse69))) (let ((.cse67 (select .cse65 |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse68 (bvadd (concat (select .cse67 .cse5) (select .cse67 |c_ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) .cse61)))) (let ((.cse66 ((_ extract 63 32) .cse68))) (let ((.cse63 (store (store .cse67 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse68)) .cse5 .cse66))) (let ((.cse64 (bvadd ((_ sign_extend 32) (select (select (store .cse65 |c_ULTIMATE.start_main_~#sum~0.base| .cse63) c_ULTIMATE.start_main_~a~0.base) .cse7)) (concat .cse66 (select .cse63 |c_ULTIMATE.start_main_~#sum~0.offset|))))) (let ((.cse62 ((_ extract 63 32) .cse64))) (concat .cse62 (select (store (store .cse63 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse64)) .cse5 .cse62) |c_ULTIMATE.start_main_~#sum~0.offset|))))))))))))))))) is different from true [2021-10-13 07:57:14,443 WARN L207 SmtUtils]: Spent 8.36 s on a formula simplification. DAG size of input: 172 DAG size of output: 65 [2021-10-13 07:57:38,480 WARN L207 SmtUtils]: Spent 11.46 s on a formula simplification. DAG size of input: 174 DAG size of output: 67 [2021-10-13 07:57:42,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:57:42,846 INFO L93 Difference]: Finished difference Result 121 states and 144 transitions. [2021-10-13 07:57:42,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 07:57:42,849 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 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 29 [2021-10-13 07:57:42,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:57:42,851 INFO L225 Difference]: With dead ends: 121 [2021-10-13 07:57:42,851 INFO L226 Difference]: Without dead ends: 103 [2021-10-13 07:57:42,853 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1233 ImplicationChecksByTransitivity, 135950.2ms TimeCoverageRelationStatistics Valid=701, Invalid=3860, Unknown=7, NotChecked=402, Total=4970 [2021-10-13 07:57:42,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-13 07:57:42,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 63. [2021-10-13 07:57:42,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1935483870967742) internal successors, (74), 62 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:57:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2021-10-13 07:57:42,868 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 29 [2021-10-13 07:57:42,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:57:42,868 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2021-10-13 07:57:42,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:57:42,869 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2021-10-13 07:57:42,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 07:57:42,870 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:57:42,870 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:57:42,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-13 07:57:43,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-10-13 07:57:43,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-13 07:57:43,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:57:43,482 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:57:43,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:57:43,483 INFO L82 PathProgramCache]: Analyzing trace with hash 42825004, now seen corresponding path program 1 times [2021-10-13 07:57:43,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:57:43,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814991147] [2021-10-13 07:57:43,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:57:43,484 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:57:43,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:57:43,485 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:57:43,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 07:57:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:57:43,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 07:57:43,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:57:43,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 9 [2021-10-13 07:57:44,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2021-10-13 07:57:44,274 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 31 treesize of output 15 [2021-10-13 07:57:44,587 INFO L354 Elim1Store]: treesize reduction 300, result has 10.2 percent of original size [2021-10-13 07:57:44,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 78 treesize of output 56 [2021-10-13 07:57:50,928 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-10-13 07:57:50,928 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 59 treesize of output 29 [2021-10-13 07:57:50,998 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:57:50,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:57:53,187 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#sum~0.offset| (_ BitVec 32))) (= (_ bv2 32) (let ((.cse3 (bvmul c_ULTIMATE.start_main_~i~0 (_ bv4 32)))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0.base| (let ((.cse2 (bvadd (_ bv4 32) |ULTIMATE.start_main_~#sum~0.offset|)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse1 (bvadd (concat (select .cse0 .cse2) (select .cse0 |ULTIMATE.start_main_~#sum~0.offset|)) ((_ sign_extend 32) (select (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base) (bvadd .cse3 c_ULTIMATE.start_main_~a~0.offset)))))) (store (store .cse0 |ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse1)) .cse2 ((_ extract 63 32) .cse1))))) c_ULTIMATE.start_main_~a~0.base) (bvadd (_ bv4 32) .cse3 c_ULTIMATE.start_main_~a~0.offset))))) is different from false [2021-10-13 07:57:55,266 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#sum~0.offset| (_ BitVec 32))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0.base| (let ((.cse2 (bvadd (_ bv4 32) |ULTIMATE.start_main_~#sum~0.offset|)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse1 (bvadd ((_ sign_extend 32) (select (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset)) (concat (select .cse0 .cse2) (select .cse0 |ULTIMATE.start_main_~#sum~0.offset|))))) (store (store .cse0 |ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse1)) .cse2 ((_ extract 63 32) .cse1))))) c_ULTIMATE.start_main_~a~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~a~0.offset)) (_ bv2 32))) is different from false [2021-10-13 07:57:57,588 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:57:57,589 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 7194 treesize of output 6416 [2021-10-13 07:57:57,655 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:57:57,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814991147] [2021-10-13 07:57:57,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 07:57:57,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1281345478] [2021-10-13 07:57:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:57:57,656 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:57:57,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:57:57,678 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:57:57,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-10-13 07:57:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:57:58,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 07:57:58,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:57:59,227 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 0 case distinctions, treesize of input 31 treesize of output 15 [2021-10-13 07:58:03,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:58:04,074 INFO L354 Elim1Store]: treesize reduction 286, result has 10.6 percent of original size [2021-10-13 07:58:04,075 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 91 treesize of output 61 [2021-10-13 07:58:09,129 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-10-13 07:58:09,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 34 [2021-10-13 07:58:09,163 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:58:09,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:58:14,513 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:58:14,514 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 7219 treesize of output 6437 [2021-10-13 07:58:14,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 07:58:14,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752900566] [2021-10-13 07:58:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:58:14,573 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:58:14,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:58:14,574 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:58:14,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-13 07:58:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:58:15,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:58:15,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:58:15,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2021-10-13 07:58:16,013 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 31 treesize of output 15 [2021-10-13 07:58:18,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:58:18,584 INFO L354 Elim1Store]: treesize reduction 286, result has 10.6 percent of original size [2021-10-13 07:58:18,584 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 78 treesize of output 56 [2021-10-13 07:58:29,419 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-10-13 07:58:29,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 29 [2021-10-13 07:58:29,454 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 07:58:29,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:58:29,723 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:58:29,723 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 7194 treesize of output 6416 [2021-10-13 07:58:29,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 07:58:29,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:58:29,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-13 07:58:29,763 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-13 07:58:29,763 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-13 07:58:29,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:58:29,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 07:58:29,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-10-13 07:58:30,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-13 07:58:30,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adaac83-0e2f-464a-b0d6-e0f0bfb0cd8d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:58:30,382 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:58:30,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:58:30 BoogieIcfgContainer [2021-10-13 07:58:30,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:58:30,396 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:58:30,396 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:58:30,396 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:58:30,396 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:15" (3/4) ... [2021-10-13 07:58:30,398 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:58:30,398 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:58:30,399 INFO L168 Benchmark]: Toolchain (without parser) took 375523.52 ms. Allocated memory was 71.3 MB in the beginning and 94.4 MB in the end (delta: 23.1 MB). Free memory was 55.4 MB in the beginning and 20.9 MB in the end (delta: 34.5 MB). Peak memory consumption was 57.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:30,399 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 71.3 MB. Free memory was 52.7 MB in the beginning and 52.6 MB in the end (delta: 32.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:58:30,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.82 ms. Allocated memory is still 71.3 MB. Free memory was 55.3 MB in the beginning and 55.6 MB in the end (delta: -322.4 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:30,401 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.13 ms. Allocated memory is still 71.3 MB. Free memory was 55.6 MB in the beginning and 53.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:58:30,401 INFO L168 Benchmark]: Boogie Preprocessor took 85.50 ms. Allocated memory is still 71.3 MB. Free memory was 53.9 MB in the beginning and 52.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:58:30,402 INFO L168 Benchmark]: RCFGBuilder took 600.83 ms. Allocated memory is still 71.3 MB. Free memory was 52.3 MB in the beginning and 40.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:30,406 INFO L168 Benchmark]: TraceAbstraction took 374410.60 ms. Allocated memory was 71.3 MB in the beginning and 94.4 MB in the end (delta: 23.1 MB). Free memory was 39.8 MB in the beginning and 21.1 MB in the end (delta: 18.7 MB). Peak memory consumption was 43.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:30,407 INFO L168 Benchmark]: Witness Printer took 2.93 ms. Allocated memory is still 94.4 MB. Free memory was 21.1 MB in the beginning and 20.9 MB in the end (delta: 198.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:58:30,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 71.3 MB. Free memory was 52.7 MB in the beginning and 52.6 MB in the end (delta: 32.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 349.82 ms. Allocated memory is still 71.3 MB. Free memory was 55.3 MB in the beginning and 55.6 MB in the end (delta: -322.4 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.13 ms. Allocated memory is still 71.3 MB. Free memory was 55.6 MB in the beginning and 53.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.50 ms. Allocated memory is still 71.3 MB. Free memory was 53.9 MB in the beginning and 52.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 600.83 ms. Allocated memory is still 71.3 MB. Free memory was 52.3 MB in the beginning and 40.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 374410.60 ms. Allocated memory was 71.3 MB in the beginning and 94.4 MB in the end (delta: 23.1 MB). Free memory was 39.8 MB in the beginning and 21.1 MB in the end (delta: 18.7 MB). Peak memory consumption was 43.9 MB. Max. memory is 16.1 GB. * Witness Printer took 2.93 ms. Allocated memory is still 94.4 MB. Free memory was 21.1 MB in the beginning and 20.9 MB in the end (delta: 198.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i