./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/bor5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/bor5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE --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 1a4987addfe5f74a2ffcc1ac07d342e5a630d26b982b6fa887540d0e2c4f5965 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/bor5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE --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 1a4987addfe5f74a2ffcc1ac07d342e5a630d26b982b6fa887540d0e2c4f5965 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:34:20,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:34:20,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:34:20,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:34:20,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:34:20,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:34:20,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:34:20,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:34:20,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:34:20,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:34:20,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:34:20,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:34:20,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:34:20,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:34:20,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:34:20,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:34:20,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:34:20,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:34:20,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:34:20,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:34:20,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:34:20,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:34:20,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:34:20,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:34:20,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:34:20,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:34:20,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:34:20,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:34:20,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:34:20,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:34:20,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:34:20,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:34:20,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:34:20,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:34:20,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:34:20,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:34:20,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:34:20,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:34:20,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:34:20,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:34:20,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:34:20,249 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:34:20,293 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:34:20,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:34:20,294 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:34:20,295 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:34:20,295 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:34:20,295 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:34:20,296 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:34:20,296 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:34:20,302 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:34:20,302 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:34:20,304 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:34:20,304 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:34:20,304 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:34:20,304 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:34:20,305 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:34:20,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:34:20,306 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:34:20,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:34:20,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:34:20,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:34:20,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:34:20,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:34:20,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:34:20,307 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:34:20,308 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:34:20,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:34:20,308 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:34:20,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:34:20,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:34:20,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:34:20,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:34:20,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:34:20,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:34:20,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:34:20,328 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:34:20,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:34:20,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:34:20,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:34:20,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:34:20,330 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_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a4987addfe5f74a2ffcc1ac07d342e5a630d26b982b6fa887540d0e2c4f5965 [2021-10-24 10:34:20,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:34:20,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:34:20,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:34:20,685 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:34:20,686 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:34:20,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/array-crafted/bor5.i [2021-10-24 10:34:20,764 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/data/46a45eceb/a3331ff12a24478dbce82c2a4aa00789/FLAGd564e1c4c [2021-10-24 10:34:21,269 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:34:21,270 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/sv-benchmarks/c/array-crafted/bor5.i [2021-10-24 10:34:21,279 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/data/46a45eceb/a3331ff12a24478dbce82c2a4aa00789/FLAGd564e1c4c [2021-10-24 10:34:21,602 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/data/46a45eceb/a3331ff12a24478dbce82c2a4aa00789 [2021-10-24 10:34:21,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:34:21,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:34:21,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:34:21,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:34:21,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:34:21,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:34:21" (1/1) ... [2021-10-24 10:34:21,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@764fed3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:21, skipping insertion in model container [2021-10-24 10:34:21,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:34:21" (1/1) ... [2021-10-24 10:34:21,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:34:21,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:34:21,842 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_94928877-1309-4ad0-bfdf-f379b49dea7f/sv-benchmarks/c/array-crafted/bor5.i[1364,1377] [2021-10-24 10:34:21,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:34:21,853 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:34:21,877 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_94928877-1309-4ad0-bfdf-f379b49dea7f/sv-benchmarks/c/array-crafted/bor5.i[1364,1377] [2021-10-24 10:34:21,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:34:21,893 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:34:21,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:21 WrapperNode [2021-10-24 10:34:21,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:34:21,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:34:21,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:34:21,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:34:21,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:21" (1/1) ... [2021-10-24 10:34:21,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:21" (1/1) ... [2021-10-24 10:34:21,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:34:21,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:34:21,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:34:21,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:34:21,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:21" (1/1) ... [2021-10-24 10:34:21,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:21" (1/1) ... [2021-10-24 10:34:21,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:21" (1/1) ... [2021-10-24 10:34:21,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:21" (1/1) ... [2021-10-24 10:34:21,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:21" (1/1) ... [2021-10-24 10:34:21,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:21" (1/1) ... [2021-10-24 10:34:21,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:21" (1/1) ... [2021-10-24 10:34:21,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:34:21,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:34:21,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:34:21,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:34:21,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:21" (1/1) ... [2021-10-24 10:34:21,989 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:34:22,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:34:22,019 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:34:22,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:34:22,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:34:22,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:34:22,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 10:34:22,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:34:22,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:34:22,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 10:34:22,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:34:22,591 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:34:22,592 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-24 10:34:22,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:34:22 BoogieIcfgContainer [2021-10-24 10:34:22,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:34:22,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:34:22,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:34:22,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:34:22,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:34:21" (1/3) ... [2021-10-24 10:34:22,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5339d9b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:34:22, skipping insertion in model container [2021-10-24 10:34:22,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:21" (2/3) ... [2021-10-24 10:34:22,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5339d9b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:34:22, skipping insertion in model container [2021-10-24 10:34:22,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:34:22" (3/3) ... [2021-10-24 10:34:22,607 INFO L111 eAbstractionObserver]: Analyzing ICFG bor5.i [2021-10-24 10:34:22,613 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:34:22,613 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:34:22,670 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:34:22,677 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:34:22,678 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:34:22,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:22,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 10:34:22,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:34:22,700 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:34:22,701 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:34:22,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:34:22,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1392646538, now seen corresponding path program 1 times [2021-10-24 10:34:22,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:34:22,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353439057] [2021-10-24 10:34:22,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:34:22,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:34:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:34:22,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:34:22,898 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:34:22,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353439057] [2021-10-24 10:34:22,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353439057] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:34:22,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:34:22,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:34:22,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971472065] [2021-10-24 10:34:22,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:34:22,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:34:22,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:34:22,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:34:22,923 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:22,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:34:22,966 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2021-10-24 10:34:22,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:34:22,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-24 10:34:22,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:34:22,976 INFO L225 Difference]: With dead ends: 24 [2021-10-24 10:34:22,977 INFO L226 Difference]: Without dead ends: 11 [2021-10-24 10:34:22,979 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:34:22,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-24 10:34:23,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-24 10:34:23,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.5) 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) [2021-10-24 10:34:23,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2021-10-24 10:34:23,010 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 9 [2021-10-24 10:34:23,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:34:23,011 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-10-24 10:34:23,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:23,011 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2021-10-24 10:34:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:34:23,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:34:23,012 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:34:23,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:34:23,013 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:34:23,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:34:23,014 INFO L82 PathProgramCache]: Analyzing trace with hash -13332003, now seen corresponding path program 1 times [2021-10-24 10:34:23,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:34:23,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266616379] [2021-10-24 10:34:23,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:34:23,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:34:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:34:23,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 10:34:23,133 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:34:23,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266616379] [2021-10-24 10:34:23,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266616379] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:34:23,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:34:23,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:34:23,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103008083] [2021-10-24 10:34:23,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:34:23,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:34:23,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:34:23,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:34:23,138 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:23,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:34:23,214 INFO L93 Difference]: Finished difference Result 20 states and 29 transitions. [2021-10-24 10:34:23,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:34:23,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 10:34:23,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:34:23,217 INFO L225 Difference]: With dead ends: 20 [2021-10-24 10:34:23,217 INFO L226 Difference]: Without dead ends: 14 [2021-10-24 10:34:23,219 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:34:23,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-24 10:34:23,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-24 10:34:23,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:23,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2021-10-24 10:34:23,229 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 10 [2021-10-24 10:34:23,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:34:23,229 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-10-24 10:34:23,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:23,232 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2021-10-24 10:34:23,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 10:34:23,232 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:34:23,233 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:34:23,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:34:23,235 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:34:23,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:34:23,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1561250112, now seen corresponding path program 1 times [2021-10-24 10:34:23,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:34:23,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995591757] [2021-10-24 10:34:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:34:23,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:34:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:34:23,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-24 10:34:23,431 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:34:23,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995591757] [2021-10-24 10:34:23,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995591757] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:34:23,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:34:23,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:34:23,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435870539] [2021-10-24 10:34:23,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:34:23,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:34:23,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:34:23,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:34:23,435 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:23,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:34:23,470 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2021-10-24 10:34:23,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:34:23,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-24 10:34:23,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:34:23,471 INFO L225 Difference]: With dead ends: 20 [2021-10-24 10:34:23,471 INFO L226 Difference]: Without dead ends: 15 [2021-10-24 10:34:23,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:34:23,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-24 10:34:23,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-24 10:34:23,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:23,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2021-10-24 10:34:23,476 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 13 [2021-10-24 10:34:23,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:34:23,477 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2021-10-24 10:34:23,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:23,477 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2021-10-24 10:34:23,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-24 10:34:23,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:34:23,478 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:34:23,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 10:34:23,478 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:34:23,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:34:23,479 INFO L82 PathProgramCache]: Analyzing trace with hash 592403004, now seen corresponding path program 1 times [2021-10-24 10:34:23,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:34:23,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907280027] [2021-10-24 10:34:23,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:34:23,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:34:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:34:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-24 10:34:23,563 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:34:23,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907280027] [2021-10-24 10:34:23,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907280027] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 10:34:23,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219385677] [2021-10-24 10:34:23,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:34:23,568 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:34:23,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:34:23,577 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:34:23,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:34:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:34:23,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 10:34:23,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:34:23,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-24 10:34:23,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:34:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-24 10:34:23,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219385677] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:34:23,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1059128213] [2021-10-24 10:34:23,944 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-24 10:34:23,945 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 10:34:23,954 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 10:34:23,961 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 10:34:23,961 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 10:34:24,003 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,007 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-24 10:34:24,012 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,013 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,014 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 10:34:24,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-10-24 10:34:24,051 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 10=[|v_#valid_14|]} [2021-10-24 10:34:24,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-24 10:34:24,075 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,079 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 10:34:24,081 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,082 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 10:34:24,083 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:34:24,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:24,122 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-24 10:34:24,147 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,149 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:34:24,151 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,152 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:34:24,153 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:34:24,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:24,171 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,175 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,180 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-10-24 10:34:24,185 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:34:24,186 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:155, output treesize:140 [2021-10-24 10:34:24,209 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.2 percent of original size [2021-10-24 10:34:24,211 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,212 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,213 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-24 10:34:24,214 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,216 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-24 10:34:24,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-10-24 10:34:24,228 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_12|], 10=[|v_#valid_15|]} [2021-10-24 10:34:24,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 24 [2021-10-24 10:34:24,243 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,245 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-10-24 10:34:24,246 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-10-24 10:34:24,247 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:34:24,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:24,259 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-10-24 10:34:24,275 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:34:24,279 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:34:24,280 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:34:24,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:24,290 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,298 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,302 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-10-24 10:34:24,303 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:34:24,303 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:170, output treesize:163 [2021-10-24 10:34:24,312 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,336 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,338 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,343 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,344 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-24 10:34:24,359 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:34:24,361 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,362 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,368 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,370 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,371 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-24 10:34:24,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-24 10:34:24,373 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,374 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-24 10:34:24,382 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size 184 [2021-10-24 10:34:24,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 28 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 112 [2021-10-24 10:34:24,447 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-24 10:34:24,463 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-24 10:34:24,465 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:34:24,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:24,489 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,503 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size [2021-10-24 10:34:24,512 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 179 [2021-10-24 10:34:24,516 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:34:24,516 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:185, output treesize:179 [2021-10-24 10:34:24,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:24,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:24,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:24,670 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,691 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,693 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,695 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,696 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,697 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-24 10:34:24,698 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-24 10:34:24,698 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,706 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,723 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,729 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,736 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,738 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-24 10:34:24,742 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,743 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-10-24 10:34:24,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 383 [2021-10-24 10:34:24,755 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,760 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,769 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 364 [2021-10-24 10:34:24,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 365 [2021-10-24 10:34:24,784 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,790 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,796 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,797 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,801 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,802 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,803 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-24 10:34:24,804 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-24 10:34:24,804 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,805 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,811 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,813 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,814 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-24 10:34:24,815 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-24 10:34:24,816 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,817 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-10-24 10:34:24,824 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,825 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,835 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,836 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-24 10:34:24,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-24 10:34:24,840 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,841 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,843 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,845 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-10-24 10:34:24,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-10-24 10:34:24,849 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,850 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,852 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-10-24 10:34:24,857 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 399 [2021-10-24 10:34:24,859 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:24,866 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:24,873 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 372 [2021-10-24 10:34:24,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 427 [2021-10-24 10:34:24,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:24,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 28 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 117 [2021-10-24 10:34:25,002 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-24 10:34:25,017 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-24 10:34:25,019 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:34:25,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 29 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 132 [2021-10-24 10:34:25,085 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,093 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-10-24 10:34:25,095 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,096 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-10-24 10:34:25,096 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:34:25,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,138 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,180 INFO L180 QuantifierPusher]: treesize reduction 82, result has 83.4 percent of original size [2021-10-24 10:34:25,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 423 [2021-10-24 10:34:25,199 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-24 10:34:25,199 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:501, output treesize:423 [2021-10-24 10:34:25,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,291 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-10-24 10:34:25,295 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:25,296 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,297 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:25,297 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:34:25,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-24 10:34:25,299 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:25,300 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-24 10:34:25,302 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-24 10:34:25,309 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 16 treesize of output 12 [2021-10-24 10:34:25,310 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,310 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 10:34:25,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,311 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 10:34:25,311 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:34:25,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,315 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-24 10:34:25,319 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:34:25,320 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:68 [2021-10-24 10:34:25,326 INFO L180 QuantifierPusher]: treesize reduction 31, result has 69.6 percent of original size [2021-10-24 10:34:25,330 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-24 10:34:25,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,378 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,386 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-10-24 10:34:25,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,441 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.1 percent of original size [2021-10-24 10:34:25,443 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-10-24 10:34:25,457 INFO L180 QuantifierPusher]: treesize reduction 38, result has 79.8 percent of original size [2021-10-24 10:34:25,460 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:25,462 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,468 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:25,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-10-24 10:34:25,494 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:25,495 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,512 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-24 10:34:25,514 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-10-24 10:34:25,516 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:25,517 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,517 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-24 10:34:25,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 197 [2021-10-24 10:34:25,546 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 10:34:25,547 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,548 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:34:25,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,549 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:34:25,549 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:34:25,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,568 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 30 treesize of output 20 [2021-10-24 10:34:25,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-24 10:34:25,571 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-24 10:34:25,572 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:34:25,591 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 10:34:25,591 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,592 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:34:25,592 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:34:25,593 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 10:34:25,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,608 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 30 treesize of output 20 [2021-10-24 10:34:25,609 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-24 10:34:25,612 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,612 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-24 10:34:25,612 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-24 10:34:25,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,622 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,626 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,630 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-10-24 10:34:25,631 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-24 10:34:25,631 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:455, output treesize:180 [2021-10-24 10:34:25,636 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-10-24 10:34:25,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,703 INFO L180 QuantifierPusher]: treesize reduction 30, result has 71.4 percent of original size [2021-10-24 10:34:25,705 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-24 10:34:25,715 INFO L180 QuantifierPusher]: treesize reduction 31, result has 83.0 percent of original size [2021-10-24 10:34:25,717 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:25,718 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 10:34:25,722 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-24 10:34:25,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 10:34:25,740 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 27 [2021-10-24 10:34:25,741 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-24 10:34:25,743 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,743 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-24 10:34:25,744 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:34:25,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,755 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 10:34:25,756 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 27 [2021-10-24 10:34:25,757 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,759 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-24 10:34:25,759 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-24 10:34:25,760 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:34:25,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,775 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,778 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,782 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 240 [2021-10-24 10:34:25,783 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-24 10:34:25,784 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:262, output treesize:240 [2021-10-24 10:34:25,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,828 INFO L180 QuantifierPusher]: treesize reduction 30, result has 80.0 percent of original size [2021-10-24 10:34:25,830 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:25,831 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,831 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-24 10:34:25,833 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-10-24 10:34:25,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:25,844 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 24 treesize of output 24 [2021-10-24 10:34:25,845 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-24 10:34:25,846 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,847 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-24 10:34:25,847 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:34:25,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,852 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,854 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-10-24 10:34:25,857 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:34:25,857 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:112, output treesize:108 [2021-10-24 10:34:25,869 INFO L180 QuantifierPusher]: treesize reduction 31, result has 80.6 percent of original size [2021-10-24 10:34:25,875 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:34:25,875 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,876 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:34:25,880 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-24 10:34:25,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-24 10:34:25,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 10:34:25,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 10:34:25,892 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:34:25,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,897 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,899 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-24 10:34:25,901 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:34:25,902 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:99, output treesize:95 [2021-10-24 10:34:25,904 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,908 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.7 percent of original size 88 [2021-10-24 10:34:25,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:25,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:25,975 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 201 [2021-10-24 10:34:25,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:26,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:26,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:26,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:26,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:26,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:26,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:34:26,038 INFO L180 QuantifierPusher]: treesize reduction 30, result has 74.1 percent of original size [2021-10-24 10:34:26,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-24 10:34:26,050 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 10:34:27,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:34:27,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 10:34:27,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-10-24 10:34:27,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828537283] [2021-10-24 10:34:27,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 10:34:27,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:34:27,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 10:34:27,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-24 10:34:27,292 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:27,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:34:27,332 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2021-10-24 10:34:27,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:34:27,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-24 10:34:27,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:34:27,334 INFO L225 Difference]: With dead ends: 27 [2021-10-24 10:34:27,334 INFO L226 Difference]: Without dead ends: 16 [2021-10-24 10:34:27,335 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1272.7ms TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-24 10:34:27,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-24 10:34:27,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-24 10:34:27,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:27,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-10-24 10:34:27,339 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 14 [2021-10-24 10:34:27,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:34:27,339 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-10-24 10:34:27,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:27,340 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-10-24 10:34:27,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-24 10:34:27,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:34:27,340 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:34:27,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:34:27,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:34:27,564 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:34:27,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:34:27,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1719001655, now seen corresponding path program 2 times [2021-10-24 10:34:27,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:34:27,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662924095] [2021-10-24 10:34:27,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:34:27,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:34:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:34:27,659 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:34:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:34:27,774 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:34:27,775 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:34:27,776 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:34:27,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-10-24 10:34:27,784 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:34:27,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:34:27 BoogieIcfgContainer [2021-10-24 10:34:27,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:34:27,852 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:34:27,852 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:34:27,852 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:34:27,853 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:34:22" (3/4) ... [2021-10-24 10:34:27,856 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:34:27,856 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:34:27,857 INFO L168 Benchmark]: Toolchain (without parser) took 6250.56 ms. Allocated memory was 86.0 MB in the beginning and 144.7 MB in the end (delta: 58.7 MB). Free memory was 43.9 MB in the beginning and 109.2 MB in the end (delta: -65.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:34:27,858 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory was 60.2 MB in the beginning and 60.1 MB in the end (delta: 78.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:34:27,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.81 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 64.7 MB in the beginning and 88.2 MB in the end (delta: -23.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:34:27,859 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.39 ms. Allocated memory is still 119.5 MB. Free memory was 88.2 MB in the beginning and 86.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:34:27,860 INFO L168 Benchmark]: Boogie Preprocessor took 34.86 ms. Allocated memory is still 119.5 MB. Free memory was 86.5 MB in the beginning and 85.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:34:27,860 INFO L168 Benchmark]: RCFGBuilder took 616.09 ms. Allocated memory is still 119.5 MB. Free memory was 85.0 MB in the beginning and 67.5 MB in the end (delta: 17.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:34:27,861 INFO L168 Benchmark]: TraceAbstraction took 5254.00 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 67.1 MB in the beginning and 109.2 MB in the end (delta: -42.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:34:27,870 INFO L168 Benchmark]: Witness Printer took 4.29 ms. Allocated memory is still 144.7 MB. Free memory is still 109.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:34:27,872 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 86.0 MB. Free memory was 60.2 MB in the beginning and 60.1 MB in the end (delta: 78.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 262.81 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 64.7 MB in the beginning and 88.2 MB in the end (delta: -23.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.39 ms. Allocated memory is still 119.5 MB. Free memory was 88.2 MB in the beginning and 86.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.86 ms. Allocated memory is still 119.5 MB. Free memory was 86.5 MB in the beginning and 85.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 616.09 ms. Allocated memory is still 119.5 MB. Free memory was 85.0 MB in the beginning and 67.5 MB in the end (delta: 17.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5254.00 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 67.1 MB in the beginning and 109.2 MB in the end (delta: -42.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.29 ms. Allocated memory is still 144.7 MB. Free memory is still 109.2 MB. 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: 57]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 25. Possible FailurePath: [L17] int N; [L32] N = __VERIFIER_nondet_int() [L33] COND TRUE N > 1 [L34] int x[N]; [L35] int temp; [L36] int ret; [L37] int ret2; [L38] int ret5; [L40] int i = 0; VAL [N=2] [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ VAL [N=2] [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ VAL [N=2] [L40] COND FALSE !(i < N) [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 VAL [N=2] [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res | x[i] [L24] i++ VAL [N=2] [L24] COND FALSE !(i < N) [L27] return res; [L45] ret = bor(x) [L47] EXPR x[0] [L47] temp=x[0] [L47] EXPR x[1] [L47] x[0] = x[1] [L47] x[1] = temp [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 VAL [N=2] [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res | x[i] [L24] i++ VAL [N=2] [L24] COND FALSE !(i < N) [L27] return res; [L48] ret2 = bor(x) [L49] EXPR x[0] [L49] temp=x[0] [L50] int i =0 ; VAL [N=2] [L50] COND TRUE i main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE 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 -> 1a4987addfe5f74a2ffcc1ac07d342e5a630d26b982b6fa887540d0e2c4f5965 [2021-10-24 10:34:31,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:34:31,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:34:31,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:34:31,055 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:34:31,055 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:34:31,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/array-crafted/bor5.i [2021-10-24 10:34:31,123 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/data/e84f72c8f/20e85f88400f46e59a4a75697f392987/FLAGffd69d37b [2021-10-24 10:34:31,753 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:34:31,753 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/sv-benchmarks/c/array-crafted/bor5.i [2021-10-24 10:34:31,762 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/data/e84f72c8f/20e85f88400f46e59a4a75697f392987/FLAGffd69d37b [2021-10-24 10:34:32,101 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/data/e84f72c8f/20e85f88400f46e59a4a75697f392987 [2021-10-24 10:34:32,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:34:32,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:34:32,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:34:32,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:34:32,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:34:32,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:34:32" (1/1) ... [2021-10-24 10:34:32,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@751b7e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:32, skipping insertion in model container [2021-10-24 10:34:32,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:34:32" (1/1) ... [2021-10-24 10:34:32,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:34:32,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:34:32,419 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_94928877-1309-4ad0-bfdf-f379b49dea7f/sv-benchmarks/c/array-crafted/bor5.i[1364,1377] [2021-10-24 10:34:32,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:34:32,450 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:34:32,529 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/sv-benchmarks/c/array-crafted/bor5.i[1364,1377] [2021-10-24 10:34:32,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:34:32,562 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:34:32,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:32 WrapperNode [2021-10-24 10:34:32,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:34:32,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:34:32,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:34:32,567 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:34:32,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:32" (1/1) ... [2021-10-24 10:34:32,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:32" (1/1) ... [2021-10-24 10:34:32,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:34:32,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:34:32,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:34:32,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:34:32,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:32" (1/1) ... [2021-10-24 10:34:32,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:32" (1/1) ... [2021-10-24 10:34:32,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:32" (1/1) ... [2021-10-24 10:34:32,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:32" (1/1) ... [2021-10-24 10:34:32,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:32" (1/1) ... [2021-10-24 10:34:32,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:32" (1/1) ... [2021-10-24 10:34:32,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:32" (1/1) ... [2021-10-24 10:34:32,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:34:32,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:34:32,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:34:32,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:34:32,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:32" (1/1) ... [2021-10-24 10:34:32,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:34:32,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:34:32,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:34:32,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:34:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 10:34:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:34:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-24 10:34:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:34:32,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:34:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:34:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-24 10:34:33,234 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:34:33,235 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-24 10:34:33,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:34:33 BoogieIcfgContainer [2021-10-24 10:34:33,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:34:33,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:34:33,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:34:33,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:34:33,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:34:32" (1/3) ... [2021-10-24 10:34:33,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29548b30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:34:33, skipping insertion in model container [2021-10-24 10:34:33,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:32" (2/3) ... [2021-10-24 10:34:33,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29548b30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:34:33, skipping insertion in model container [2021-10-24 10:34:33,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:34:33" (3/3) ... [2021-10-24 10:34:33,246 INFO L111 eAbstractionObserver]: Analyzing ICFG bor5.i [2021-10-24 10:34:33,252 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:34:33,252 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:34:33,300 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:34:33,307 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:34:33,307 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:34:33,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 28 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) [2021-10-24 10:34:33,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-24 10:34:33,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:34:33,330 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:34:33,331 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:34:33,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:34:33,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1563818866, now seen corresponding path program 1 times [2021-10-24 10:34:33,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:34:33,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826521608] [2021-10-24 10:34:33,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:34:33,375 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:34:33,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:34:33,389 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:34:33,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:34:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:34:33,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 10:34:33,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:34:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:34:33,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:34:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:34:33,740 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:34:33,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826521608] [2021-10-24 10:34:33,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826521608] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:34:33,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:34:33,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:34:33,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366157032] [2021-10-24 10:34:33,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:34:33,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:34:33,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:34:33,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:34:33,769 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 28 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) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:33,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:34:33,788 INFO L93 Difference]: Finished difference Result 53 states and 72 transitions. [2021-10-24 10:34:33,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:34:33,790 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-24 10:34:33,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:34:33,798 INFO L225 Difference]: With dead ends: 53 [2021-10-24 10:34:33,799 INFO L226 Difference]: Without dead ends: 24 [2021-10-24 10:34:33,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:34:33,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-24 10:34:33,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-24 10:34:33,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-10-24 10:34:33,841 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2021-10-24 10:34:33,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:34:33,842 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-10-24 10:34:33,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:33,843 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-10-24 10:34:33,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-24 10:34:33,844 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:34:33,844 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:34:33,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:34:34,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:34:34,067 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:34:34,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:34:34,068 INFO L82 PathProgramCache]: Analyzing trace with hash -2019195128, now seen corresponding path program 1 times [2021-10-24 10:34:34,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:34:34,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128514383] [2021-10-24 10:34:34,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:34:34,071 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:34:34,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:34:34,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:34:34,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:34:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:34:34,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:34:34,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:34:34,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:34:34,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:34:34,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:34:34,362 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:34:34,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128514383] [2021-10-24 10:34:34,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128514383] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:34:34,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:34:34,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:34:34,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125526413] [2021-10-24 10:34:34,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:34:34,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:34:34,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:34:34,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:34:34,367 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:34,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:34:34,434 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-10-24 10:34:34,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:34:34,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-24 10:34:34,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:34:34,436 INFO L225 Difference]: With dead ends: 46 [2021-10-24 10:34:34,437 INFO L226 Difference]: Without dead ends: 27 [2021-10-24 10:34:34,438 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:34:34,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-24 10:34:34,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-24 10:34:34,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:34,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-10-24 10:34:34,444 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 18 [2021-10-24 10:34:34,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:34:34,445 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-10-24 10:34:34,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:34,445 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-10-24 10:34:34,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-24 10:34:34,446 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:34:34,446 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] [2021-10-24 10:34:34,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:34:34,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:34:34,658 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:34:34,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:34:34,659 INFO L82 PathProgramCache]: Analyzing trace with hash -524663612, now seen corresponding path program 1 times [2021-10-24 10:34:34,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:34:34,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663623132] [2021-10-24 10:34:34,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:34:34,661 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:34:34,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:34:34,677 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:34:34,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 10:34:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:34:34,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:34:34,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:34:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:34:35,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:34:35,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:34:35,418 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:34:35,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663623132] [2021-10-24 10:34:35,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663623132] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:34:35,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1118563405] [2021-10-24 10:34:35,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:34:35,420 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 10:34:35,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 10:34:35,422 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 10:34:35,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-24 10:34:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:34:35,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:34:35,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:34:35,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:34:35,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:34:35,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:34:35,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1118563405] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:34:35,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180905134] [2021-10-24 10:34:35,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:34:35,885 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:34:35,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:34:35,893 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:34:35,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-24 10:34:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:34:36,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:34:36,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:34:36,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-24 10:34:36,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:34:36,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-24 10:34:36,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180905134] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:34:36,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-10-24 10:34:36,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 7, 7, 7] total 13 [2021-10-24 10:34:36,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164025082] [2021-10-24 10:34:36,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:34:36,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:34:36,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:34:36,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-24 10:34:36,204 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:36,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:34:36,347 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2021-10-24 10:34:36,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:34:36,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-24 10:34:36,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:34:36,351 INFO L225 Difference]: With dead ends: 49 [2021-10-24 10:34:36,351 INFO L226 Difference]: Without dead ends: 33 [2021-10-24 10:34:36,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 240.6ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-10-24 10:34:36,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-24 10:34:36,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2021-10-24 10:34:36,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:36,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-10-24 10:34:36,364 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 22 [2021-10-24 10:34:36,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:34:36,364 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-10-24 10:34:36,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:36,365 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-10-24 10:34:36,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-24 10:34:36,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:34:36,367 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, 1, 1, 1, 1, 1] [2021-10-24 10:34:36,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-24 10:34:36,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-24 10:34:36,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:34:36,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt [2021-10-24 10:34:36,987 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:34:36,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:34:36,988 INFO L82 PathProgramCache]: Analyzing trace with hash -187943454, now seen corresponding path program 1 times [2021-10-24 10:34:36,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:34:36,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450664401] [2021-10-24 10:34:36,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:34:36,989 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:34:36,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:34:36,990 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:34:36,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 10:34:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:34:37,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:34:37,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:34:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 10:34:37,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:34:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 10:34:37,901 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:34:37,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450664401] [2021-10-24 10:34:37,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450664401] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:34:37,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1608554671] [2021-10-24 10:34:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:34:37,902 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 10:34:37,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 10:34:37,904 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 10:34:37,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-24 10:34:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:34:38,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:34:38,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:34:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 10:34:38,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:34:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 10:34:38,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1608554671] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:34:38,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697906740] [2021-10-24 10:34:38,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:34:38,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:34:38,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:34:38,532 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:34:38,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-24 10:34:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:34:38,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 10:34:38,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:34:38,976 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-24 10:34:38,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:34:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-24 10:34:39,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697906740] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:34:39,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-24 10:34:39,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 6] total 17 [2021-10-24 10:34:39,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853220739] [2021-10-24 10:34:39,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-24 10:34:39,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:34:39,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-24 10:34:39,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-10-24 10:34:39,278 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:40,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:34:40,059 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2021-10-24 10:34:40,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-24 10:34:40,060 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-24 10:34:40,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:34:40,061 INFO L225 Difference]: With dead ends: 107 [2021-10-24 10:34:40,062 INFO L226 Difference]: Without dead ends: 87 [2021-10-24 10:34:40,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 654.0ms TimeCoverageRelationStatistics Valid=234, Invalid=468, Unknown=0, NotChecked=0, Total=702 [2021-10-24 10:34:40,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-24 10:34:40,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 55. [2021-10-24 10:34:40,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 54 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:40,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-10-24 10:34:40,080 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 28 [2021-10-24 10:34:40,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:34:40,081 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-10-24 10:34:40,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:34:40,082 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-10-24 10:34:40,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-24 10:34:40,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:34:40,083 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:34:40,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 10:34:40,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-24 10:34:40,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2021-10-24 10:34:40,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt [2021-10-24 10:34:40,705 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:34:40,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:34:40,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1519457344, now seen corresponding path program 1 times [2021-10-24 10:34:40,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:34:40,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740865050] [2021-10-24 10:34:40,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:34:40,706 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:34:40,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:34:40,708 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:34:40,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-24 10:34:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:34:41,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-24 10:34:41,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:34:41,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:41,639 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 45 treesize of output 25 [2021-10-24 10:34:42,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:42,168 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:42,170 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 61 treesize of output 36 [2021-10-24 10:34:42,430 INFO L354 Elim1Store]: treesize reduction 56, result has 11.1 percent of original size [2021-10-24 10:34:42,432 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 2 case distinctions, treesize of input 58 treesize of output 45 [2021-10-24 10:34:42,612 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-10-24 10:34:42,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 34 [2021-10-24 10:34:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:34:43,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:34:46,023 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 143 treesize of output 111 [2021-10-24 10:34:46,040 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-24 10:34:46,041 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 212 treesize of output 156 [2021-10-24 10:34:46,092 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 49 treesize of output 37 [2021-10-24 10:34:46,098 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-24 10:34:46,100 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 62 treesize of output 1 [2021-10-24 10:34:46,906 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:34:46,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740865050] [2021-10-24 10:34:46,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-24 10:34:46,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1910303781] [2021-10-24 10:34:46,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:34:46,908 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 10:34:46,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 10:34:46,909 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 10:34:46,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-24 10:34:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:34:47,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-24 10:34:47,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:34:47,550 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 15 treesize of output 11 [2021-10-24 10:34:47,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:47,787 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 45 treesize of output 25 [2021-10-24 10:34:48,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:48,006 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:48,009 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 61 treesize of output 36 [2021-10-24 10:34:48,234 INFO L354 Elim1Store]: treesize reduction 56, result has 11.1 percent of original size [2021-10-24 10:34:48,235 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 2 case distinctions, treesize of input 58 treesize of output 45 [2021-10-24 10:34:48,316 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-10-24 10:34:48,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 34 [2021-10-24 10:34:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:34:48,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:34:52,987 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 255 treesize of output 223 [2021-10-24 10:34:53,009 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-24 10:34:53,010 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 714 treesize of output 588 [2021-10-24 10:34:55,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-24 10:34:55,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040880680] [2021-10-24 10:34:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:34:55,281 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:34:55,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:34:55,289 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:34:55,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-24 10:34:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:34:56,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-24 10:34:56,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:34:56,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:56,952 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 45 treesize of output 25 [2021-10-24 10:34:57,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:34:57,687 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:34:57,688 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 61 treesize of output 36 [2021-10-24 10:34:57,888 INFO L354 Elim1Store]: treesize reduction 56, result has 11.1 percent of original size [2021-10-24 10:34:57,888 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 2 case distinctions, treesize of input 58 treesize of output 45 [2021-10-24 10:34:57,947 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-10-24 10:34:57,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 34 [2021-10-24 10:34:58,221 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-24 10:34:58,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:35:01,047 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 143 treesize of output 111 [2021-10-24 10:35:01,055 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-24 10:35:01,056 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 249 treesize of output 183 [2021-10-24 10:35:01,097 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 49 treesize of output 37 [2021-10-24 10:35:01,102 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-24 10:35:01,103 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 62 treesize of output 1 [2021-10-24 10:35:01,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-24 10:35:01,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:35:01,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-24 10:35:01,417 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-24 10:35:01,417 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-24 10:35:01,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:35:01,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-24 10:35:01,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-24 10:35:01,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-10-24 10:35:02,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94928877-1309-4ad0-bfdf-f379b49dea7f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:35:02,042 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:35:02,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:35:02 BoogieIcfgContainer [2021-10-24 10:35:02,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:35:02,063 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:35:02,063 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:35:02,064 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:35:02,064 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:34:33" (3/4) ... [2021-10-24 10:35:02,068 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:35:02,068 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:35:02,070 INFO L168 Benchmark]: Toolchain (without parser) took 29963.43 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 49.0 MB in the beginning and 35.3 MB in the end (delta: 13.7 MB). Peak memory consumption was 41.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:35:02,070 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 69.2 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:35:02,071 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.70 ms. Allocated memory is still 69.2 MB. Free memory was 48.8 MB in the beginning and 51.1 MB in the end (delta: -2.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:35:02,071 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.77 ms. Allocated memory is still 69.2 MB. Free memory was 51.1 MB in the beginning and 49.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:35:02,072 INFO L168 Benchmark]: Boogie Preprocessor took 76.32 ms. Allocated memory is still 69.2 MB. Free memory was 49.3 MB in the beginning and 47.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:35:02,072 INFO L168 Benchmark]: RCFGBuilder took 512.15 ms. Allocated memory is still 69.2 MB. Free memory was 47.7 MB in the beginning and 35.2 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:35:02,073 INFO L168 Benchmark]: TraceAbstraction took 28823.28 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 34.6 MB in the beginning and 36.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:35:02,074 INFO L168 Benchmark]: Witness Printer took 5.30 ms. Allocated memory is still 96.5 MB. Free memory was 36.2 MB in the beginning and 35.3 MB in the end (delta: 939.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:35:02,077 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 69.2 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 451.70 ms. Allocated memory is still 69.2 MB. Free memory was 48.8 MB in the beginning and 51.1 MB in the end (delta: -2.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.77 ms. Allocated memory is still 69.2 MB. Free memory was 51.1 MB in the beginning and 49.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.32 ms. Allocated memory is still 69.2 MB. Free memory was 49.3 MB in the beginning and 47.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 512.15 ms. Allocated memory is still 69.2 MB. Free memory was 47.7 MB in the beginning and 35.2 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 28823.28 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 34.6 MB in the beginning and 36.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.30 ms. Allocated memory is still 96.5 MB. Free memory was 36.2 MB in the beginning and 35.3 MB in the end (delta: 939.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 57]: 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: [L17] int N; [L32] N = __VERIFIER_nondet_int() [L33] COND TRUE N > 1 [L34] int x[N]; [L35] int temp; [L36] int ret; [L37] int ret2; [L38] int ret5; [L40] int i = 0; [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ [L40] COND FALSE !(i < N) [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res | x[i] [L24] i++ [L24] COND FALSE !(i < N) [L27] return res; [L45] ret = bor(x) [L47] EXPR x[0] [L47] temp=x[0] [L47] EXPR x[1] [L47] x[0] = x[1] [L47] x[1] = temp [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res | x[i] [L24] i++ [L24] COND FALSE !(i < N) [L27] return res; [L48] ret2 = bor(x) [L49] EXPR x[0] [L49] temp=x[0] [L50] int i =0 ; [L50] COND TRUE i