./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 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/bor5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8 --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 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:54:49,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:54:49,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:54:49,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:54:49,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:54:49,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:54:49,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:54:49,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:54:49,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:54:49,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:54:49,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:54:49,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:54:49,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:54:49,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:54:49,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:54:49,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:54:49,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:54:49,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:54:49,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:54:49,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:54:49,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:54:49,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:54:49,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:54:49,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:54:49,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:54:49,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:54:49,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:54:49,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:54:49,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:54:49,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:54:49,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:54:49,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:54:49,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:54:49,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:54:49,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:54:49,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:54:49,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:54:49,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:54:49,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:54:49,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:54:49,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:54:49,669 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 00:54:49,700 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:54:49,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:54:49,701 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:54:49,701 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:54:49,701 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:54:49,702 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:54:49,702 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:54:49,702 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:54:49,702 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:54:49,702 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:54:49,703 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:54:49,703 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:54:49,703 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:54:49,703 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:54:49,703 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:54:49,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:54:49,705 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:54:49,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:54:49,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:54:49,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:54:49,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:54:49,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:54:49,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:54:49,706 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:54:49,706 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:54:49,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:54:49,707 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:54:49,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:54:49,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:54:49,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:54:49,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:54:49,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:54:49,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:54:49,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:54:49,709 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:54:49,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:54:49,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:54:49,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:54:49,709 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:54:49,709 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_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a4987addfe5f74a2ffcc1ac07d342e5a630d26b982b6fa887540d0e2c4f5965 [2021-11-07 00:54:50,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:54:50,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:54:50,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:54:50,030 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:54:50,032 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:54:50,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/array-crafted/bor5.i [2021-11-07 00:54:50,121 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/data/8cb01ee46/45f7d94d2da2437cbdc306b3c6206278/FLAG2712642c5 [2021-11-07 00:54:50,627 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:54:50,628 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/sv-benchmarks/c/array-crafted/bor5.i [2021-11-07 00:54:50,641 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/data/8cb01ee46/45f7d94d2da2437cbdc306b3c6206278/FLAG2712642c5 [2021-11-07 00:54:50,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/data/8cb01ee46/45f7d94d2da2437cbdc306b3c6206278 [2021-11-07 00:54:50,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:54:50,977 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:54:50,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:50,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:54:50,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:54:50,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:50" (1/1) ... [2021-11-07 00:54:50,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6db99cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:50, skipping insertion in model container [2021-11-07 00:54:50,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:50" (1/1) ... [2021-11-07 00:54:50,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:54:51,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:54:51,259 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_9f1e386a-3025-45ac-a794-73986752f0d3/sv-benchmarks/c/array-crafted/bor5.i[1364,1377] [2021-11-07 00:54:51,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:51,269 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:54:51,319 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_9f1e386a-3025-45ac-a794-73986752f0d3/sv-benchmarks/c/array-crafted/bor5.i[1364,1377] [2021-11-07 00:54:51,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:51,338 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:54:51,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:51 WrapperNode [2021-11-07 00:54:51,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:51,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:54:51,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:54:51,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:54:51,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:51" (1/1) ... [2021-11-07 00:54:51,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:51" (1/1) ... [2021-11-07 00:54:51,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:54:51,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:54:51,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:54:51,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:54:51,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:51" (1/1) ... [2021-11-07 00:54:51,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:51" (1/1) ... [2021-11-07 00:54:51,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:51" (1/1) ... [2021-11-07 00:54:51,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:51" (1/1) ... [2021-11-07 00:54:51,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:51" (1/1) ... [2021-11-07 00:54:51,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:51" (1/1) ... [2021-11-07 00:54:51,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:51" (1/1) ... [2021-11-07 00:54:51,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:54:51,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:54:51,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:54:51,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:54:51,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:51" (1/1) ... [2021-11-07 00:54:51,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:54:51,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:54:51,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:54:51,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:54:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 00:54:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:54:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 00:54:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:54:51,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:54:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 00:54:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:54:52,079 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:54:52,079 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-11-07 00:54:52,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:52 BoogieIcfgContainer [2021-11-07 00:54:52,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:54:52,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:54:52,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:54:52,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:54:52,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:54:50" (1/3) ... [2021-11-07 00:54:52,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7e7d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:52, skipping insertion in model container [2021-11-07 00:54:52,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:51" (2/3) ... [2021-11-07 00:54:52,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7e7d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:52, skipping insertion in model container [2021-11-07 00:54:52,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:52" (3/3) ... [2021-11-07 00:54:52,091 INFO L111 eAbstractionObserver]: Analyzing ICFG bor5.i [2021-11-07 00:54:52,097 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:54:52,097 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 00:54:52,147 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:54:52,154 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 [2021-11-07 00:54:52,154 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 00:54:52,167 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) [2021-11-07 00:54:52,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 00:54:52,172 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:52,173 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:52,174 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:52,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:52,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1392646538, now seen corresponding path program 1 times [2021-11-07 00:54:52,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:54:52,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589326490] [2021-11-07 00:54:52,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:52,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:54:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:52,378 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:54:52,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589326490] [2021-11-07 00:54:52,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589326490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:52,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:52,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 00:54:52,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224756670] [2021-11-07 00:54:52,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:54:52,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:54:52,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:54:52,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:54:52,403 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) [2021-11-07 00:54:52,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:52,502 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2021-11-07 00:54:52,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:54:52,504 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 [2021-11-07 00:54:52,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:52,514 INFO L225 Difference]: With dead ends: 24 [2021-11-07 00:54:52,514 INFO L226 Difference]: Without dead ends: 11 [2021-11-07 00:54:52,517 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:54:52,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-07 00:54:52,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-07 00:54:52,547 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) [2021-11-07 00:54:52,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2021-11-07 00:54:52,549 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 9 [2021-11-07 00:54:52,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:52,550 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-11-07 00:54:52,550 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) [2021-11-07 00:54:52,551 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2021-11-07 00:54:52,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 00:54:52,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:52,552 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:52,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 00:54:52,553 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:52,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:52,556 INFO L85 PathProgramCache]: Analyzing trace with hash -13332003, now seen corresponding path program 1 times [2021-11-07 00:54:52,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:54:52,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444068500] [2021-11-07 00:54:52,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:52,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:54:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:52,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:54:52,720 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:54:52,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444068500] [2021-11-07 00:54:52,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444068500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:52,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:52,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 00:54:52,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725475466] [2021-11-07 00:54:52,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:54:52,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:54:52,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:54:52,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:54:52,727 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) [2021-11-07 00:54:52,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:52,790 INFO L93 Difference]: Finished difference Result 20 states and 29 transitions. [2021-11-07 00:54:52,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:54:52,793 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 [2021-11-07 00:54:52,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:52,794 INFO L225 Difference]: With dead ends: 20 [2021-11-07 00:54:52,794 INFO L226 Difference]: Without dead ends: 14 [2021-11-07 00:54:52,795 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:54:52,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-07 00:54:52,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-07 00:54:52,802 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) [2021-11-07 00:54:52,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2021-11-07 00:54:52,804 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 10 [2021-11-07 00:54:52,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:52,804 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-11-07 00:54:52,805 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) [2021-11-07 00:54:52,806 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2021-11-07 00:54:52,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 00:54:52,807 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:52,807 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:52,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 00:54:52,809 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:52,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:52,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1561250112, now seen corresponding path program 1 times [2021-11-07 00:54:52,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:54:52,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150019258] [2021-11-07 00:54:52,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:52,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:54:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:52,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 00:54:52,943 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:54:52,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150019258] [2021-11-07 00:54:52,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150019258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:52,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:52,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 00:54:52,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891707084] [2021-11-07 00:54:52,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:54:52,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:54:52,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:54:52,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:54:52,946 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) [2021-11-07 00:54:52,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:52,977 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2021-11-07 00:54:52,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:54:52,978 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 [2021-11-07 00:54:52,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:52,979 INFO L225 Difference]: With dead ends: 20 [2021-11-07 00:54:52,979 INFO L226 Difference]: Without dead ends: 15 [2021-11-07 00:54:52,979 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:54:52,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-07 00:54:52,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-07 00:54:52,983 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) [2021-11-07 00:54:52,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2021-11-07 00:54:52,984 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 13 [2021-11-07 00:54:52,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:52,985 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2021-11-07 00:54:52,985 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) [2021-11-07 00:54:52,986 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2021-11-07 00:54:52,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 00:54:52,986 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:52,987 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:52,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 00:54:52,987 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:52,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:52,988 INFO L85 PathProgramCache]: Analyzing trace with hash 592403004, now seen corresponding path program 1 times [2021-11-07 00:54:52,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:54:52,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540049545] [2021-11-07 00:54:52,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:52,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:54:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:53,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 00:54:53,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:54:53,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540049545] [2021-11-07 00:54:53,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540049545] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:54:53,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142335598] [2021-11-07 00:54:53,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:53,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:54:53,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:54:53,081 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:54:53,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 00:54:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:53,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:54:53,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 00:54:53,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:53,418 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 00:54:53,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142335598] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:54:53,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1655506053] [2021-11-07 00:54:53,444 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-07 00:54:53,445 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 00:54:53,451 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 00:54:53,458 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 00:54:53,459 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 00:54:53,505 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,510 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:53,513 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,514 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-07 00:54:53,518 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:53,520 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,521 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 00:54:53,526 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-11-07 00:54:53,570 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 10=[|v_#valid_14|]} [2021-11-07 00:54:53,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,591 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 [2021-11-07 00:54:53,591 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-07 00:54:53,598 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-07 00:54:53,599 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:53,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:53,618 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,634 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 [2021-11-07 00:54:53,635 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 00:54:53,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,639 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 00:54:53,640 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:53,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:53,649 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,652 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-07 00:54:53,656 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:54:53,656 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:155, output treesize:140 [2021-11-07 00:54:53,667 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.2 percent of original size [2021-11-07 00:54:53,669 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:53,670 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,670 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-07 00:54:53,672 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:53,673 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-07 00:54:53,677 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-11-07 00:54:53,683 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_12|], 10=[|v_#valid_15|]} [2021-11-07 00:54:53,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,696 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 [2021-11-07 00:54:53,697 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,699 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-07 00:54:53,700 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-07 00:54:53,701 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:53,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:53,712 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,734 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 [2021-11-07 00:54:53,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 00:54:53,743 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 00:54:53,747 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:53,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:53,757 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,762 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,768 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-07 00:54:53,769 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:54:53,769 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:170, output treesize:163 [2021-11-07 00:54:53,780 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,794 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:53,795 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,797 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:53,798 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 00:54:53,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 00:54:53,800 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:53,801 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,803 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:53,804 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,805 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-07 00:54:53,807 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-07 00:54:53,807 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:53,809 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,810 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 00:54:53,817 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size 184 [2021-11-07 00:54:53,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:53,874 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 [2021-11-07 00:54:53,877 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-07 00:54:53,894 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,895 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-07 00:54:53,896 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:53,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:53,907 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:53,915 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size [2021-11-07 00:54:53,923 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 179 [2021-11-07 00:54:53,924 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:54:53,924 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:185, output treesize:179 [2021-11-07 00:54:53,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:53,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:53,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:54,049 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,073 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,074 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,077 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,078 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,078 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 00:54:54,079 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 00:54:54,080 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,087 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,104 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,111 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,114 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,115 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,116 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-11-07 00:54:54,121 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,122 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,123 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-07 00:54:54,130 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 383 [2021-11-07 00:54:54,132 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,138 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,146 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 364 [2021-11-07 00:54:54,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 365 [2021-11-07 00:54:54,162 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,169 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,180 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,181 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,184 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,186 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 00:54:54,188 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 00:54:54,188 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,194 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-11-07 00:54:54,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-07 00:54:54,200 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-07 00:54:54,216 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,217 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,220 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,221 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 00:54:54,223 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 00:54:54,223 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,225 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,229 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-07 00:54:54,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-11-07 00:54:54,235 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,236 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,238 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-07 00:54:54,245 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 399 [2021-11-07 00:54:54,246 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,267 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 372 [2021-11-07 00:54:54,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 427 [2021-11-07 00:54:54,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,413 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 [2021-11-07 00:54:54,415 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,429 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-07 00:54:54,431 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,432 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-07 00:54:54,432 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:54,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:54,496 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 [2021-11-07 00:54:54,499 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-07 00:54:54,509 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,510 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-07 00:54:54,511 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:54,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:54,570 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,589 INFO L180 QuantifierPusher]: treesize reduction 82, result has 83.4 percent of original size [2021-11-07 00:54:54,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 423 [2021-11-07 00:54:54,599 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 00:54:54,600 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:501, output treesize:423 [2021-11-07 00:54:54,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:54,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:54,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:54,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:54,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:54,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:54,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:54,693 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-07 00:54:54,701 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,702 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,702 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,703 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,704 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 00:54:54,705 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 00:54:54,706 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,706 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,707 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 00:54:54,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 00:54:54,716 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 [2021-11-07 00:54:54,717 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,717 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 00:54:54,718 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 00:54:54,718 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:54,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:54,721 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,723 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,725 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-07 00:54:54,726 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:54:54,726 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:68 [2021-11-07 00:54:54,734 INFO L180 QuantifierPusher]: treesize reduction 31, result has 69.6 percent of original size [2021-11-07 00:54:54,738 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-07 00:54:54,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:54,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:54,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:54,799 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,810 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-07 00:54:54,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:54,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:54,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:54,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:54,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:54,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:54,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:54,894 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.1 percent of original size [2021-11-07 00:54:54,897 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-07 00:54:54,920 INFO L180 QuantifierPusher]: treesize reduction 38, result has 79.8 percent of original size [2021-11-07 00:54:54,925 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,928 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,936 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,938 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,979 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-07 00:54:54,988 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:54,990 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,022 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-07 00:54:55,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-11-07 00:54:55,027 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:55,028 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,029 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 00:54:55,037 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 197 [2021-11-07 00:54:55,066 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 00:54:55,066 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 00:54:55,068 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,068 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 00:54:55,069 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:55,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:55,090 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 [2021-11-07 00:54:55,091 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,094 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-07 00:54:55,095 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,096 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-07 00:54:55,096 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:55,113 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 00:54:55,113 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,114 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 00:54:55,115 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,116 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 00:54:55,116 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:55,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:55,132 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 [2021-11-07 00:54:55,133 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,134 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-07 00:54:55,135 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,135 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-07 00:54:55,136 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:55,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,159 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,165 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,168 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-11-07 00:54:55,169 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 00:54:55,170 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:455, output treesize:180 [2021-11-07 00:54:55,185 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-11-07 00:54:55,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,234 INFO L180 QuantifierPusher]: treesize reduction 30, result has 71.4 percent of original size [2021-11-07 00:54:55,238 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-11-07 00:54:55,248 INFO L180 QuantifierPusher]: treesize reduction 31, result has 83.0 percent of original size [2021-11-07 00:54:55,256 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:55,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 00:54:55,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-07 00:54:55,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:55,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:55,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 00:54:55,279 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 [2021-11-07 00:54:55,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 00:54:55,282 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,283 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 00:54:55,283 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:55,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:55,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:55,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 00:54:55,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 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 [2021-11-07 00:54:55,297 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 00:54:55,299 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 00:54:55,300 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:55,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,316 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,321 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 240 [2021-11-07 00:54:55,326 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 00:54:55,330 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:262, output treesize:240 [2021-11-07 00:54:55,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,388 INFO L180 QuantifierPusher]: treesize reduction 30, result has 80.0 percent of original size [2021-11-07 00:54:55,391 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:55,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 00:54:55,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-11-07 00:54:55,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:55,420 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 [2021-11-07 00:54:55,421 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 00:54:55,423 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 00:54:55,424 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:55,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,431 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,433 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,435 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-07 00:54:55,436 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:54:55,436 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:112, output treesize:108 [2021-11-07 00:54:55,451 INFO L180 QuantifierPusher]: treesize reduction 31, result has 80.6 percent of original size [2021-11-07 00:54:55,454 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:55,455 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 00:54:55,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-07 00:54:55,469 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 [2021-11-07 00:54:55,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 00:54:55,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 00:54:55,471 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:55,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,476 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-07 00:54:55,480 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:54:55,480 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:99, output treesize:95 [2021-11-07 00:54:55,483 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,488 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.7 percent of original size 88 [2021-11-07 00:54:55,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:55,558 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 201 [2021-11-07 00:54:55,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:55,615 INFO L180 QuantifierPusher]: treesize reduction 30, result has 74.1 percent of original size [2021-11-07 00:54:55,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-07 00:54:55,629 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 00:54:56,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:54:56,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 00:54:56,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-07 00:54:56,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371369736] [2021-11-07 00:54:56,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 00:54:56,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:54:56,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 00:54:56,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-11-07 00:54:56,861 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) [2021-11-07 00:54:56,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:56,899 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2021-11-07 00:54:56,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:54:56,900 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 [2021-11-07 00:54:56,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:56,901 INFO L225 Difference]: With dead ends: 27 [2021-11-07 00:54:56,901 INFO L226 Difference]: Without dead ends: 16 [2021-11-07 00:54:56,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-11-07 00:54:56,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-07 00:54:56,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-07 00:54:56,906 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) [2021-11-07 00:54:56,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-11-07 00:54:56,907 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 14 [2021-11-07 00:54:56,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:56,907 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-11-07 00:54:56,907 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) [2021-11-07 00:54:56,908 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-11-07 00:54:56,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 00:54:56,908 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:56,909 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:56,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:57,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:54:57,136 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:57,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:57,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1719001655, now seen corresponding path program 2 times [2021-11-07 00:54:57,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:54:57,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040835730] [2021-11-07 00:54:57,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:57,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:54:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 00:54:57,201 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 00:54:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 00:54:57,332 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 00:54:57,332 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 00:54:57,333 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 00:54:57,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-07 00:54:57,340 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2021-11-07 00:54:57,343 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 00:54:57,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:54:57 BoogieIcfgContainer [2021-11-07 00:54:57,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 00:54:57,380 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 00:54:57,380 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 00:54:57,380 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 00:54:57,380 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:52" (3/4) ... [2021-11-07 00:54:57,385 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 00:54:57,385 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 00:54:57,386 INFO L168 Benchmark]: Toolchain (without parser) took 6408.78 ms. Allocated memory was 98.6 MB in the beginning and 161.5 MB in the end (delta: 62.9 MB). Free memory was 63.2 MB in the beginning and 94.2 MB in the end (delta: -31.0 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2021-11-07 00:54:57,386 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 70.6 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:54:57,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.89 ms. Allocated memory is still 98.6 MB. Free memory was 63.0 MB in the beginning and 73.3 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 00:54:57,388 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.25 ms. Allocated memory is still 98.6 MB. Free memory was 73.3 MB in the beginning and 71.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 00:54:57,388 INFO L168 Benchmark]: Boogie Preprocessor took 46.36 ms. Allocated memory is still 98.6 MB. Free memory was 71.7 MB in the beginning and 70.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:54:57,388 INFO L168 Benchmark]: RCFGBuilder took 627.19 ms. Allocated memory is still 98.6 MB. Free memory was 70.0 MB in the beginning and 53.5 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-07 00:54:57,389 INFO L168 Benchmark]: TraceAbstraction took 5295.01 ms. Allocated memory was 98.6 MB in the beginning and 161.5 MB in the end (delta: 62.9 MB). Free memory was 52.8 MB in the beginning and 94.2 MB in the end (delta: -41.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. [2021-11-07 00:54:57,398 INFO L168 Benchmark]: Witness Printer took 5.28 ms. Allocated memory is still 161.5 MB. Free memory is still 94.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:54:57,400 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 70.6 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 358.89 ms. Allocated memory is still 98.6 MB. Free memory was 63.0 MB in the beginning and 73.3 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.25 ms. Allocated memory is still 98.6 MB. Free memory was 73.3 MB in the beginning and 71.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.36 ms. Allocated memory is still 98.6 MB. Free memory was 71.7 MB in the beginning and 70.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 627.19 ms. Allocated memory is still 98.6 MB. Free memory was 70.0 MB in the beginning and 53.5 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5295.01 ms. Allocated memory was 98.6 MB in the beginning and 161.5 MB in the end (delta: 62.9 MB). Free memory was 52.8 MB in the beginning and 94.2 MB in the end (delta: -41.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.28 ms. Allocated memory is still 161.5 MB. Free memory is still 94.2 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8 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 [2021-11-07 00:55:00,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:55:00,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:55:00,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:55:00,709 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:55:00,710 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:55:00,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/array-crafted/bor5.i [2021-11-07 00:55:00,807 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/data/78cc1dc6c/b08e4359e20741f6882cd037b18cce98/FLAG83907ed07 [2021-11-07 00:55:01,478 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:55:01,483 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/sv-benchmarks/c/array-crafted/bor5.i [2021-11-07 00:55:01,491 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/data/78cc1dc6c/b08e4359e20741f6882cd037b18cce98/FLAG83907ed07 [2021-11-07 00:55:01,806 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/data/78cc1dc6c/b08e4359e20741f6882cd037b18cce98 [2021-11-07 00:55:01,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:55:01,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:55:01,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:55:01,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:55:01,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:55:01,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:01" (1/1) ... [2021-11-07 00:55:01,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af4545e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:01, skipping insertion in model container [2021-11-07 00:55:01,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:01" (1/1) ... [2021-11-07 00:55:01,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:55:01,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:55:02,070 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_9f1e386a-3025-45ac-a794-73986752f0d3/sv-benchmarks/c/array-crafted/bor5.i[1364,1377] [2021-11-07 00:55:02,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:55:02,086 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:55:02,132 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_9f1e386a-3025-45ac-a794-73986752f0d3/sv-benchmarks/c/array-crafted/bor5.i[1364,1377] [2021-11-07 00:55:02,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:55:02,153 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:55:02,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:02 WrapperNode [2021-11-07 00:55:02,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:55:02,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:55:02,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:55:02,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:55:02,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:02" (1/1) ... [2021-11-07 00:55:02,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:02" (1/1) ... [2021-11-07 00:55:02,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:55:02,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:55:02,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:55:02,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:55:02,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:02" (1/1) ... [2021-11-07 00:55:02,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:02" (1/1) ... [2021-11-07 00:55:02,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:02" (1/1) ... [2021-11-07 00:55:02,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:02" (1/1) ... [2021-11-07 00:55:02,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:02" (1/1) ... [2021-11-07 00:55:02,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:02" (1/1) ... [2021-11-07 00:55:02,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:02" (1/1) ... [2021-11-07 00:55:02,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:55:02,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:55:02,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:55:02,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:55:02,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:02" (1/1) ... [2021-11-07 00:55:02,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:55:02,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:02,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:55:02,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:55:02,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:55:02,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:55:02,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 00:55:02,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:55:02,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:55:02,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:55:02,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 00:55:02,823 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:55:02,823 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-11-07 00:55:02,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:02 BoogieIcfgContainer [2021-11-07 00:55:02,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:55:02,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:55:02,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:55:02,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:55:02,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:55:01" (1/3) ... [2021-11-07 00:55:02,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d69024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:55:02, skipping insertion in model container [2021-11-07 00:55:02,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:02" (2/3) ... [2021-11-07 00:55:02,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d69024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:55:02, skipping insertion in model container [2021-11-07 00:55:02,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:02" (3/3) ... [2021-11-07 00:55:02,840 INFO L111 eAbstractionObserver]: Analyzing ICFG bor5.i [2021-11-07 00:55:02,860 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:55:02,860 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 00:55:02,937 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:55:02,947 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 [2021-11-07 00:55:02,948 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 00:55:02,966 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) [2021-11-07 00:55:02,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 00:55:02,982 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:02,983 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:02,984 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:55:02,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:02,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1563818866, now seen corresponding path program 1 times [2021-11-07 00:55:03,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:03,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487239708] [2021-11-07 00:55:03,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:03,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:03,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:03,018 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:03,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:55:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:03,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 00:55:03,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:03,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:03,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:03,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:03,317 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:03,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487239708] [2021-11-07 00:55:03,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487239708] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:03,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:03,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:55:03,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570747627] [2021-11-07 00:55:03,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 00:55:03,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:03,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 00:55:03,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:55:03,341 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) [2021-11-07 00:55:03,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:03,357 INFO L93 Difference]: Finished difference Result 53 states and 72 transitions. [2021-11-07 00:55:03,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 00:55:03,358 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 [2021-11-07 00:55:03,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:03,366 INFO L225 Difference]: With dead ends: 53 [2021-11-07 00:55:03,367 INFO L226 Difference]: Without dead ends: 24 [2021-11-07 00:55:03,369 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:55:03,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-07 00:55:03,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-07 00:55:03,399 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) [2021-11-07 00:55:03,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-11-07 00:55:03,402 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2021-11-07 00:55:03,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:03,403 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-11-07 00:55:03,403 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) [2021-11-07 00:55:03,403 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-07 00:55:03,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 00:55:03,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:03,405 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:03,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:03,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:03,612 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:55:03,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:03,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2019195128, now seen corresponding path program 1 times [2021-11-07 00:55:03,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:03,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550232005] [2021-11-07 00:55:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:03,625 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:03,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:03,627 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:03,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:55:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:03,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:55:03,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:03,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:03,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:03,970 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:03,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550232005] [2021-11-07 00:55:03,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550232005] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:03,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:03,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:55:03,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424725372] [2021-11-07 00:55:03,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:55:03,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:03,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:55:03,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:55:03,982 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) [2021-11-07 00:55:04,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:04,098 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-11-07 00:55:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:55:04,100 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 [2021-11-07 00:55:04,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:04,101 INFO L225 Difference]: With dead ends: 46 [2021-11-07 00:55:04,102 INFO L226 Difference]: Without dead ends: 27 [2021-11-07 00:55:04,103 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:55:04,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-07 00:55:04,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-07 00:55:04,109 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) [2021-11-07 00:55:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-11-07 00:55:04,111 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 18 [2021-11-07 00:55:04,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:04,112 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-11-07 00:55:04,112 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) [2021-11-07 00:55:04,112 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-11-07 00:55:04,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 00:55:04,114 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:04,114 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:04,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 00:55:04,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:04,328 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:55:04,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:04,329 INFO L85 PathProgramCache]: Analyzing trace with hash -524663612, now seen corresponding path program 1 times [2021-11-07 00:55:04,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:04,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520454127] [2021-11-07 00:55:04,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:04,331 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:04,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:04,348 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:04,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:55:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:04,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:55:04,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:04,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:05,043 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:05,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520454127] [2021-11-07 00:55:05,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1520454127] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:05,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [466593401] [2021-11-07 00:55:05,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:05,044 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:55:05,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:55:05,046 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:55:05,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 00:55:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:05,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:55:05,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:05,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:05,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:05,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:05,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [466593401] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:05,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270638141] [2021-11-07 00:55:05,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:05,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:05,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:05,488 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:55:05,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 00:55:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:05,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:55:05,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 00:55:05,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 00:55:05,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270638141] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:05,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 00:55:05,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 7, 7, 7] total 13 [2021-11-07 00:55:05,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077346412] [2021-11-07 00:55:05,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:55:05,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:05,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:55:05,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 00:55:05,789 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) [2021-11-07 00:55:05,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:05,938 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2021-11-07 00:55:05,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:55:05,941 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 [2021-11-07 00:55:05,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:05,942 INFO L225 Difference]: With dead ends: 49 [2021-11-07 00:55:05,942 INFO L226 Difference]: Without dead ends: 33 [2021-11-07 00:55:05,943 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-07 00:55:05,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-07 00:55:05,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2021-11-07 00:55:05,948 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) [2021-11-07 00:55:05,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-11-07 00:55:05,949 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 22 [2021-11-07 00:55:05,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:05,950 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-11-07 00:55:05,950 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) [2021-11-07 00:55:05,950 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-11-07 00:55:05,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 00:55:05,957 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:05,957 INFO L513 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] [2021-11-07 00:55:05,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-11-07 00:55:06,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-07 00:55:06,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:06,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:06,561 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:55:06,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:06,562 INFO L85 PathProgramCache]: Analyzing trace with hash -187943454, now seen corresponding path program 1 times [2021-11-07 00:55:06,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:06,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861310292] [2021-11-07 00:55:06,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:06,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:06,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:06,565 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:06,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 00:55:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:06,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:55:06,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:07,009 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 00:55:07,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:07,377 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 00:55:07,378 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:07,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861310292] [2021-11-07 00:55:07,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861310292] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:07,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1085447962] [2021-11-07 00:55:07,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:07,379 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:55:07,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:55:07,384 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:55:07,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 00:55:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:07,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:55:07,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:07,792 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 00:55:07,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:07,952 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 00:55:07,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1085447962] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:07,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787855163] [2021-11-07 00:55:07,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:07,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:07,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:07,955 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:55:07,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 00:55:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:08,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 00:55:08,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:08,349 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 00:55:08,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 00:55:08,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787855163] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:08,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 00:55:08,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 6] total 17 [2021-11-07 00:55:08,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390579006] [2021-11-07 00:55:08,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 00:55:08,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:08,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 00:55:08,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-11-07 00:55:08,619 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) [2021-11-07 00:55:09,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:09,387 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2021-11-07 00:55:09,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 00:55:09,388 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 [2021-11-07 00:55:09,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:09,390 INFO L225 Difference]: With dead ends: 107 [2021-11-07 00:55:09,390 INFO L226 Difference]: Without dead ends: 87 [2021-11-07 00:55:09,391 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=234, Invalid=468, Unknown=0, NotChecked=0, Total=702 [2021-11-07 00:55:09,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-07 00:55:09,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 55. [2021-11-07 00:55:09,403 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) [2021-11-07 00:55:09,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-11-07 00:55:09,404 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 28 [2021-11-07 00:55:09,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:09,405 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-11-07 00:55:09,405 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) [2021-11-07 00:55:09,405 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-11-07 00:55:09,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 00:55:09,407 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:09,407 INFO L513 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] [2021-11-07 00:55:09,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:09,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-07 00:55:09,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2021-11-07 00:55:10,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 00:55:10,020 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:55:10,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:10,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1519457344, now seen corresponding path program 1 times [2021-11-07 00:55:10,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:10,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522164734] [2021-11-07 00:55:10,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:10,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:10,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:10,023 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:10,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 00:55:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:10,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-07 00:55:10,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:10,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:10,808 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 [2021-11-07 00:55:11,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:11,233 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:11,233 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 [2021-11-07 00:55:11,461 INFO L354 Elim1Store]: treesize reduction 56, result has 11.1 percent of original size [2021-11-07 00:55:11,462 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 [2021-11-07 00:55:11,625 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-11-07 00:55:11,626 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 [2021-11-07 00:55:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:12,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:14,833 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 [2021-11-07 00:55:14,845 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-07 00:55:14,845 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 [2021-11-07 00:55:14,893 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 [2021-11-07 00:55:14,900 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-07 00:55:14,900 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 [2021-11-07 00:55:15,652 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:15,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522164734] [2021-11-07 00:55:15,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-11-07 00:55:15,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [757528340] [2021-11-07 00:55:15,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:15,654 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:55:15,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:55:15,660 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:55:15,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 00:55:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:16,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-07 00:55:16,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:16,247 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 [2021-11-07 00:55:16,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:16,511 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 [2021-11-07 00:55:16,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:16,716 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:16,723 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 [2021-11-07 00:55:16,913 INFO L354 Elim1Store]: treesize reduction 56, result has 11.1 percent of original size [2021-11-07 00:55:16,913 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 [2021-11-07 00:55:16,980 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-11-07 00:55:16,981 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 [2021-11-07 00:55:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:17,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:22,436 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 [2021-11-07 00:55:22,479 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-07 00:55:22,480 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 [2021-11-07 00:55:24,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-11-07 00:55:24,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68224837] [2021-11-07 00:55:24,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:24,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:24,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:24,504 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:55:24,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 00:55:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:25,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-07 00:55:25,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:26,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:26,214 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 [2021-11-07 00:55:26,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:26,931 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:55:26,931 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 [2021-11-07 00:55:27,125 INFO L354 Elim1Store]: treesize reduction 56, result has 11.1 percent of original size [2021-11-07 00:55:27,126 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 [2021-11-07 00:55:27,182 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-11-07 00:55:27,182 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 [2021-11-07 00:55:27,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 00:55:27,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:29,980 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 [2021-11-07 00:55:29,988 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-07 00:55:29,989 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 [2021-11-07 00:55:30,032 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 [2021-11-07 00:55:30,038 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-07 00:55:30,038 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 [2021-11-07 00:55:30,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-11-07 00:55:30,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:30,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-07 00:55:30,313 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-07 00:55:30,313 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-07 00:55:30,320 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 00:55:30,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:30,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:30,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:30,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1e386a-3025-45ac-a794-73986752f0d3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:30,935 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-07 00:55:30,938 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 00:55:30,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:55:30 BoogieIcfgContainer [2021-11-07 00:55:30,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 00:55:30,972 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 00:55:30,973 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 00:55:30,979 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 00:55:30,980 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:02" (3/4) ... [2021-11-07 00:55:30,984 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 00:55:30,984 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 00:55:30,990 INFO L168 Benchmark]: Toolchain (without parser) took 29172.14 ms. Allocated memory was 60.8 MB in the beginning and 104.9 MB in the end (delta: 44.0 MB). Free memory was 40.5 MB in the beginning and 28.1 MB in the end (delta: 12.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 16.1 GB. [2021-11-07 00:55:30,990 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 60.8 MB. Free memory is still 40.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:55:30,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.64 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 29.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 00:55:30,992 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.78 ms. Allocated memory is still 60.8 MB. Free memory was 29.5 MB in the beginning and 43.4 MB in the end (delta: -13.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-11-07 00:55:30,993 INFO L168 Benchmark]: Boogie Preprocessor took 65.04 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 42.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 00:55:30,996 INFO L168 Benchmark]: RCFGBuilder took 512.81 ms. Allocated memory is still 60.8 MB. Free memory was 41.8 MB in the beginning and 29.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 00:55:30,997 INFO L168 Benchmark]: TraceAbstraction took 28144.12 ms. Allocated memory was 60.8 MB in the beginning and 104.9 MB in the end (delta: 44.0 MB). Free memory was 29.0 MB in the beginning and 29.2 MB in the end (delta: -201.4 kB). Peak memory consumption was 42.8 MB. Max. memory is 16.1 GB. [2021-11-07 00:55:30,997 INFO L168 Benchmark]: Witness Printer took 12.09 ms. Allocated memory is still 104.9 MB. Free memory was 29.2 MB in the beginning and 28.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 00:55:31,003 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 60.8 MB. Free memory is still 40.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 337.64 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 29.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.78 ms. Allocated memory is still 60.8 MB. Free memory was 29.5 MB in the beginning and 43.4 MB in the end (delta: -13.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.04 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 42.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 512.81 ms. Allocated memory is still 60.8 MB. Free memory was 41.8 MB in the beginning and 29.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 28144.12 ms. Allocated memory was 60.8 MB in the beginning and 104.9 MB in the end (delta: 44.0 MB). Free memory was 29.0 MB in the beginning and 29.2 MB in the end (delta: -201.4 kB). Peak memory consumption was 42.8 MB. Max. memory is 16.1 GB. * Witness Printer took 12.09 ms. Allocated memory is still 104.9 MB. Free memory was 29.2 MB in the beginning and 28.1 MB in the end (delta: 1.1 MB). 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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