./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/nested5-2.c --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_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/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_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/nested5-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/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_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/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 5ad780effdbe313ff13ad5bc7233d50356fbf06f53a57c18cd85a4aa46126eb2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:13:01,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:13:01,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:13:01,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:13:01,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:13:01,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:13:01,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:13:01,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:13:01,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:13:01,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:13:01,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:13:01,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:13:01,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:13:01,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:13:01,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:13:01,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:13:01,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:13:01,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:13:01,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:13:01,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:13:01,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:13:01,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:13:01,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:13:01,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:13:01,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:13:01,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:13:01,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:13:01,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:13:01,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:13:01,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:13:01,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:13:01,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:13:01,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:13:01,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:13:01,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:13:01,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:13:01,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:13:01,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:13:01,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:13:01,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:13:01,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:13:01,143 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:13:01,171 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:13:01,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:13:01,172 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:13:01,172 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:13:01,173 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:13:01,173 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:13:01,173 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:13:01,173 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:13:01,174 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:13:01,174 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:13:01,174 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:13:01,174 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:13:01,175 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:13:01,175 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:13:01,175 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:13:01,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:13:01,177 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:13:01,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:13:01,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:13:01,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:13:01,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:13:01,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:13:01,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:13:01,179 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:13:01,179 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:13:01,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:13:01,179 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:13:01,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:13:01,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:13:01,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:13:01,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:13:01,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:13:01,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:13:01,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:13:01,182 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:13:01,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:13:01,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:13:01,182 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:13:01,182 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:13:01,183 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_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ad780effdbe313ff13ad5bc7233d50356fbf06f53a57c18cd85a4aa46126eb2 [2021-11-07 01:13:01,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:13:01,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:13:01,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:13:01,462 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:13:01,463 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:13:01,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/loops-crafted-1/nested5-2.c [2021-11-07 01:13:01,546 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/data/932c4189b/b1367e334c3a4401a872866ab22be0c1/FLAG53f7fe6f1 [2021-11-07 01:13:01,928 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:13:01,928 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/sv-benchmarks/c/loops-crafted-1/nested5-2.c [2021-11-07 01:13:01,934 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/data/932c4189b/b1367e334c3a4401a872866ab22be0c1/FLAG53f7fe6f1 [2021-11-07 01:13:02,321 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/data/932c4189b/b1367e334c3a4401a872866ab22be0c1 [2021-11-07 01:13:02,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:13:02,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:13:02,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:13:02,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:13:02,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:13:02,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:02,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d4985b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02, skipping insertion in model container [2021-11-07 01:13:02,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:02,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:13:02,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:13:02,500 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_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/sv-benchmarks/c/loops-crafted-1/nested5-2.c[321,334] [2021-11-07 01:13:02,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:13:02,535 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:13:02,547 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_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/sv-benchmarks/c/loops-crafted-1/nested5-2.c[321,334] [2021-11-07 01:13:02,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:13:02,563 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:13:02,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02 WrapperNode [2021-11-07 01:13:02,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:13:02,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:13:02,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:13:02,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:13:02,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:02,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:02,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:13:02,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:13:02,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:13:02,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:13:02,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:02,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:02,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:02,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:02,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:02,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:02,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:02,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:13:02,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:13:02,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:13:02,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:13:02,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:02,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:13:02,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:13:02,660 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:13:02,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:13:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:13:02,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:13:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:13:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:13:02,972 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:13:02,972 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-07 01:13:02,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:13:02 BoogieIcfgContainer [2021-11-07 01:13:02,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:13:02,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:13:02,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:13:02,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:13:02,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:13:02" (1/3) ... [2021-11-07 01:13:02,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e180a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:13:02, skipping insertion in model container [2021-11-07 01:13:02,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (2/3) ... [2021-11-07 01:13:02,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e180a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:13:02, skipping insertion in model container [2021-11-07 01:13:02,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:13:02" (3/3) ... [2021-11-07 01:13:02,983 INFO L111 eAbstractionObserver]: Analyzing ICFG nested5-2.c [2021-11-07 01:13:02,989 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:13:03,005 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:13:03,051 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:13:03,072 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 01:13:03,072 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:13:03,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:03,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:13:03,091 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:03,092 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:03,092 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:13:03,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:03,098 INFO L85 PathProgramCache]: Analyzing trace with hash 194612700, now seen corresponding path program 1 times [2021-11-07 01:13:03,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:13:03,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717311163] [2021-11-07 01:13:03,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:03,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:13:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:03,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:03,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:13:03,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717311163] [2021-11-07 01:13:03,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717311163] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:03,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:03,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:13:03,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417893899] [2021-11-07 01:13:03,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:13:03,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:13:03,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:13:03,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:13:03,325 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:03,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:03,417 INFO L93 Difference]: Finished difference Result 27 states and 41 transitions. [2021-11-07 01:13:03,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:13:03,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:13:03,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:03,430 INFO L225 Difference]: With dead ends: 27 [2021-11-07 01:13:03,430 INFO L226 Difference]: Without dead ends: 15 [2021-11-07 01:13:03,433 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 01:13:03,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-07 01:13:03,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 11. [2021-11-07 01:13:03,463 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 01:13:03,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2021-11-07 01:13:03,465 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 8 [2021-11-07 01:13:03,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:03,466 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-11-07 01:13:03,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:03,466 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2021-11-07 01:13:03,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:13:03,467 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:03,467 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:03,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:13:03,468 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:13:03,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:03,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1737737134, now seen corresponding path program 1 times [2021-11-07 01:13:03,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:13:03,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017154135] [2021-11-07 01:13:03,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:03,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:13:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:03,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:03,571 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:13:03,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017154135] [2021-11-07 01:13:03,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017154135] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:13:03,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568572956] [2021-11-07 01:13:03,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:03,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:13:03,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:13:03,575 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:13:03,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:13:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:03,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:13:03,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:03,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:03,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:03,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568572956] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:13:03,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [74092884] [2021-11-07 01:13:03,783 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-07 01:13:03,783 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:13:03,787 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:13:03,793 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:13:03,794 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:13:03,831 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:03,848 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:13:03,851 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:03,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:13:03,854 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:13:03,857 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:03,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:13:03,872 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-07 01:13:03,903 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-11-07 01:13:03,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:03,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:03,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:03,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:13:03,952 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:03,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:13:03,960 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:03,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:13:03,962 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:13:03,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:04,012 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:04,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:04,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:04,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:04,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:04,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:04,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:04,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:04,060 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-07 01:13:04,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 34 [2021-11-07 01:13:04,067 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:04,076 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:13:04,083 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:04,084 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:13:04,084 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:13:04,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:04,129 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:04,146 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:04,149 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-07 01:13:04,150 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:13:04,150 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:131, output treesize:110 [2021-11-07 01:13:04,157 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:04,166 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-07 01:13:04,174 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:04,188 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-11-07 01:13:04,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:04,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:13:04,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:04,243 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-11-07 01:13:04,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:04,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-07 01:13:04,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:04,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:04,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:04,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:04,490 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-07 01:13:04,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:04,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:04,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:04,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:04,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:04,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:04,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:04,658 INFO L180 QuantifierPusher]: treesize reduction 54, result has 50.0 percent of original size [2021-11-07 01:13:04,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-07 01:13:04,698 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:13:05,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:13:05,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:13:05,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-07 01:13:05,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907281705] [2021-11-07 01:13:05,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:13:05,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:13:05,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:13:05,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:13:05,375 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:05,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:05,423 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2021-11-07 01:13:05,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:13:05,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 01:13:05,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:05,424 INFO L225 Difference]: With dead ends: 28 [2021-11-07 01:13:05,424 INFO L226 Difference]: Without dead ends: 18 [2021-11-07 01:13:05,425 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:13:05,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-07 01:13:05,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2021-11-07 01:13:05,428 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 01:13:05,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2021-11-07 01:13:05,429 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 9 [2021-11-07 01:13:05,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:05,429 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-11-07 01:13:05,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:05,430 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2021-11-07 01:13:05,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 01:13:05,430 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:05,430 INFO L513 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:05,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 01:13:05,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-07 01:13:05,647 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:13:05,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:05,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1398895196, now seen corresponding path program 2 times [2021-11-07 01:13:05,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:13:05,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531109943] [2021-11-07 01:13:05,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:05,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:13:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:05,808 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:05,810 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:13:05,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531109943] [2021-11-07 01:13:05,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531109943] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:13:05,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948719627] [2021-11-07 01:13:05,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:13:05,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:13:05,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:13:05,814 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:13:05,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 01:13:05,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-07 01:13:05,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:13:05,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:13:05,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:06,113 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:06,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:13:06,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948719627] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:13:06,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [649643334] [2021-11-07 01:13:06,226 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-07 01:13:06,226 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:13:06,227 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:13:06,227 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:13:06,227 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:13:06,234 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:06,236 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:13:06,237 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:06,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:13:06,238 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:13:06,238 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:06,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:13:06,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-07 01:13:06,246 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 21=[|v_#valid_11|]} [2021-11-07 01:13:06,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:06,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:06,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:06,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:13:06,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:06,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:13:06,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:06,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:13:06,260 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:13:06,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:06,265 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:06,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:06,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:06,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:06,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:06,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:06,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:06,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:06,295 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-07 01:13:06,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 34 [2021-11-07 01:13:06,296 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:06,299 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:13:06,299 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:06,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:13:06,300 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:13:06,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:06,307 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:06,310 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:06,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-07 01:13:06,314 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:13:06,315 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:131, output treesize:110 [2021-11-07 01:13:06,321 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:06,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-07 01:13:06,333 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:06,338 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-11-07 01:13:06,345 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:06,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:13:06,357 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:06,363 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-11-07 01:13:06,369 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:06,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-07 01:13:06,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:06,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:06,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:06,473 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:06,497 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-07 01:13:06,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:06,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:06,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:06,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:06,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:06,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:06,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:06,588 INFO L180 QuantifierPusher]: treesize reduction 54, result has 50.0 percent of original size [2021-11-07 01:13:06,590 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-07 01:13:06,596 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:13:07,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:13:07,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:13:07,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 13 [2021-11-07 01:13:07,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436390776] [2021-11-07 01:13:07,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:13:07,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:13:07,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:13:07,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-07 01:13:07,288 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 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 01:13:07,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:07,614 INFO L93 Difference]: Finished difference Result 66 states and 96 transitions. [2021-11-07 01:13:07,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 01:13:07,615 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-07 01:13:07,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:07,617 INFO L225 Difference]: With dead ends: 66 [2021-11-07 01:13:07,617 INFO L226 Difference]: Without dead ends: 53 [2021-11-07 01:13:07,618 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2021-11-07 01:13:07,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-07 01:13:07,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 19. [2021-11-07 01:13:07,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:07,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2021-11-07 01:13:07,625 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 26 transitions. Word has length 12 [2021-11-07 01:13:07,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:07,625 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 26 transitions. [2021-11-07 01:13:07,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 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 01:13:07,625 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2021-11-07 01:13:07,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:13:07,626 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:07,626 INFO L513 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:07,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-07 01:13:07,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-07 01:13:07,830 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:13:07,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:07,831 INFO L85 PathProgramCache]: Analyzing trace with hash 415788846, now seen corresponding path program 3 times [2021-11-07 01:13:07,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:13:07,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868890624] [2021-11-07 01:13:07,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:07,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:13:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:07,956 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:13:07,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868890624] [2021-11-07 01:13:07,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868890624] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:13:07,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104416258] [2021-11-07 01:13:07,959 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:13:07,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:13:07,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:13:07,966 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:13:07,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 01:13:08,028 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:13:08,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:13:08,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:13:08,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:08,111 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:08,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:08,266 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:08,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104416258] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:13:08,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [483932297] [2021-11-07 01:13:08,268 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-07 01:13:08,268 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:13:08,269 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:13:08,269 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:13:08,269 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:13:08,282 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:08,283 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:13:08,285 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:08,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:13:08,286 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:13:08,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:08,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:13:08,289 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-07 01:13:08,295 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 21=[|v_#valid_12|]} [2021-11-07 01:13:08,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:08,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:08,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:08,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:13:08,309 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:08,310 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:13:08,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:08,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:13:08,312 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:13:08,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:08,317 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:08,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:08,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:08,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:08,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:08,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:08,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:08,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:08,360 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-07 01:13:08,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 34 [2021-11-07 01:13:08,362 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:08,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:13:08,365 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:08,365 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:13:08,365 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:13:08,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:08,371 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:08,373 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:08,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-07 01:13:08,375 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:13:08,376 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:131, output treesize:110 [2021-11-07 01:13:08,380 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:08,383 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-07 01:13:08,388 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:08,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-11-07 01:13:08,395 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:08,397 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:13:08,404 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:08,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-11-07 01:13:08,413 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:08,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-11-07 01:13:08,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:08,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:08,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:08,493 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:08,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 342 [2021-11-07 01:13:08,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:08,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:08,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:08,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:08,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:08,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:08,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:08,629 INFO L180 QuantifierPusher]: treesize reduction 54, result has 50.0 percent of original size [2021-11-07 01:13:08,631 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-07 01:13:08,638 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:13:09,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:13:09,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:13:09,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-11-07 01:13:09,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697660982] [2021-11-07 01:13:09,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 01:13:09,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:13:09,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 01:13:09,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:13:09,284 INFO L87 Difference]: Start difference. First operand 19 states and 26 transitions. Second operand has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 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 01:13:09,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:09,933 INFO L93 Difference]: Finished difference Result 48 states and 72 transitions. [2021-11-07 01:13:09,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:13:09,933 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 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 13 [2021-11-07 01:13:09,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:09,934 INFO L225 Difference]: With dead ends: 48 [2021-11-07 01:13:09,934 INFO L226 Difference]: Without dead ends: 30 [2021-11-07 01:13:09,935 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2021-11-07 01:13:09,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-07 01:13:09,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2021-11-07 01:13:09,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:09,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2021-11-07 01:13:09,941 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2021-11-07 01:13:09,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:09,941 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-11-07 01:13:09,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 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 01:13:09,942 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2021-11-07 01:13:09,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 01:13:09,942 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:09,942 INFO L513 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:09,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:10,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-07 01:13:10,166 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:13:10,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:10,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1773369810, now seen corresponding path program 4 times [2021-11-07 01:13:10,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:13:10,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611260731] [2021-11-07 01:13:10,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:10,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:13:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:10,454 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:10,454 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:13:10,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611260731] [2021-11-07 01:13:10,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611260731] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:13:10,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601771586] [2021-11-07 01:13:10,455 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 01:13:10,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:13:10,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:13:10,456 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:13:10,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 01:13:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:10,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-07 01:13:10,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:10,688 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:10,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:11,190 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:11,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601771586] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:13:11,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1838926287] [2021-11-07 01:13:11,193 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-07 01:13:11,193 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:13:11,194 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:13:11,194 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:13:11,194 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:13:11,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:11,200 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:13:11,201 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:11,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:13:11,202 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:13:11,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:11,203 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:13:11,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-07 01:13:11,207 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 21=[|v_#valid_13|]} [2021-11-07 01:13:11,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:11,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:11,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:11,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:13:11,224 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:11,226 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:13:11,226 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:11,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:13:11,227 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:13:11,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:11,233 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:11,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:11,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:11,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:11,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:11,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:11,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:11,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:11,261 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-07 01:13:11,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 34 [2021-11-07 01:13:11,263 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:11,265 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:13:11,266 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:11,267 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:13:11,267 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:13:11,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:11,272 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:11,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:11,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-07 01:13:11,276 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:13:11,276 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:131, output treesize:110 [2021-11-07 01:13:11,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:11,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-07 01:13:11,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:11,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-11-07 01:13:11,296 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:11,304 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:13:11,309 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:11,311 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-11-07 01:13:11,320 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:11,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-11-07 01:13:11,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:11,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:11,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:11,383 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:11,404 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 342 [2021-11-07 01:13:11,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:11,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:11,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:11,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:11,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:11,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:11,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:11,477 INFO L180 QuantifierPusher]: treesize reduction 54, result has 50.0 percent of original size [2021-11-07 01:13:11,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-07 01:13:11,485 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:13:12,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:13:12,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:13:12,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2021-11-07 01:13:12,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430128199] [2021-11-07 01:13:12,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-07 01:13:12,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:13:12,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-07 01:13:12,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=879, Unknown=0, NotChecked=0, Total=1190 [2021-11-07 01:13:12,311 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 31 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:27,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:27,930 INFO L93 Difference]: Finished difference Result 71 states and 104 transitions. [2021-11-07 01:13:27,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-07 01:13:27,931 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-07 01:13:27,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:27,931 INFO L225 Difference]: With dead ends: 71 [2021-11-07 01:13:27,932 INFO L226 Difference]: Without dead ends: 46 [2021-11-07 01:13:27,933 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=727, Invalid=1529, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 01:13:27,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-07 01:13:27,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2021-11-07 01:13:27,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:27,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2021-11-07 01:13:27,941 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 21 [2021-11-07 01:13:27,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:27,942 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2021-11-07 01:13:27,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:27,942 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2021-11-07 01:13:27,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 01:13:27,943 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:27,944 INFO L513 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:27,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:28,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:13:28,170 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:13:28,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:28,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1371556818, now seen corresponding path program 5 times [2021-11-07 01:13:28,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:13:28,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431423191] [2021-11-07 01:13:28,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:28,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:13:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:29,002 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:29,003 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:13:29,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431423191] [2021-11-07 01:13:29,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431423191] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:13:29,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108953418] [2021-11-07 01:13:29,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:13:29,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:13:29,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:13:29,006 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:13:29,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 01:13:29,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-07 01:13:29,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:13:29,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-07 01:13:29,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:30,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:32,075 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:32,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108953418] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:13:32,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1692251904] [2021-11-07 01:13:32,078 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-07 01:13:32,078 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:13:32,079 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:13:32,079 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:13:32,079 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:13:32,084 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:32,085 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:13:32,085 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:32,086 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:13:32,086 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:13:32,087 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:32,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:13:32,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-07 01:13:32,091 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-11-07 01:13:32,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:32,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:32,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:32,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:13:32,102 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:32,103 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:13:32,103 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:32,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:13:32,104 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:13:32,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:32,109 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:32,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:32,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:32,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:32,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:32,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:32,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:32,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:32,135 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-07 01:13:32,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 34 [2021-11-07 01:13:32,137 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:32,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:13:32,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:32,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:13:32,140 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:13:32,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:32,145 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:32,146 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:32,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-07 01:13:32,148 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:13:32,148 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:131, output treesize:110 [2021-11-07 01:13:32,152 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:32,154 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-07 01:13:32,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:32,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-11-07 01:13:32,164 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:32,167 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:13:32,171 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:32,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-11-07 01:13:32,176 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:32,179 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-07 01:13:32,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:32,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:32,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:32,233 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:13:32,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-07 01:13:32,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:32,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:32,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:32,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:32,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:32,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:32,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:13:32,330 INFO L180 QuantifierPusher]: treesize reduction 54, result has 50.0 percent of original size [2021-11-07 01:13:32,332 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-07 01:13:32,340 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:13:33,377 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:13:33,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:13:33,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2021-11-07 01:13:33,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144241990] [2021-11-07 01:13:33,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-11-07 01:13:33,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:13:33,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-11-07 01:13:33,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=3295, Unknown=0, NotChecked=0, Total=4422 [2021-11-07 01:13:33,382 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 63 states, 63 states have (on average 1.1111111111111112) internal successors, (70), 63 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:56,037 WARN L207 SmtUtils]: Spent 7.53 s on a formula simplification. DAG size of input: 122 DAG size of output: 10 [2021-11-07 01:14:19,226 WARN L207 SmtUtils]: Spent 6.35 s on a formula simplification. DAG size of input: 118 DAG size of output: 10 [2021-11-07 01:15:29,717 WARN L207 SmtUtils]: Spent 6.20 s on a formula simplification. DAG size of input: 106 DAG size of output: 10 [2021-11-07 01:20:56,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:56,590 INFO L93 Difference]: Finished difference Result 119 states and 168 transitions. [2021-11-07 01:20:56,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-07 01:20:56,591 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.1111111111111112) internal successors, (70), 63 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-07 01:20:56,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:56,592 INFO L225 Difference]: With dead ends: 119 [2021-11-07 01:20:56,592 INFO L226 Difference]: Without dead ends: 78 [2021-11-07 01:20:56,597 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 72 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 445.8s TimeCoverageRelationStatistics Valid=2968, Invalid=6135, Unknown=17, NotChecked=0, Total=9120 [2021-11-07 01:20:56,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-07 01:20:56,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2021-11-07 01:20:56,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 73 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:56,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-11-07 01:20:56,609 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 37 [2021-11-07 01:20:56,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:56,609 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-11-07 01:20:56,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.1111111111111112) internal successors, (70), 63 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:56,610 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-11-07 01:20:56,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 01:20:56,612 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:56,612 INFO L513 BasicCegarLoop]: trace histogram [61, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:20:56,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:20:56,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-11-07 01:20:56,817 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:20:56,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:56,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1439830062, now seen corresponding path program 6 times [2021-11-07 01:20:56,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:20:56,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678183809] [2021-11-07 01:20:56,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:56,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:20:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:58,961 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:20:58,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678183809] [2021-11-07 01:20:58,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678183809] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:20:58,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766105888] [2021-11-07 01:20:58,962 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:20:58,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:20:58,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:20:58,970 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:20:58,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bfd8e5d-4605-4eee-8f49-7b65b2e9c016/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 01:20:59,372 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:20:59,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:20:59,375 WARN L261 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 125 conjunts are in the unsatisfiable core [2021-11-07 01:20:59,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:59,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:06,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:06,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766105888] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:21:06,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [208765157] [2021-11-07 01:21:06,518 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-07 01:21:06,518 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:21:06,518 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:21:06,518 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:21:06,519 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:21:06,527 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:06,528 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:21:06,528 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:06,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:21:06,529 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:21:06,529 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:06,530 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:21:06,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-07 01:21:06,533 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 21=[|v_#valid_15|]} [2021-11-07 01:21:06,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:06,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:06,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:06,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:21:06,550 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:06,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:21:06,551 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:06,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:21:06,551 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:21:06,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:21:06,554 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:06,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:06,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:06,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:06,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:06,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:06,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:06,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:06,579 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-07 01:21:06,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 34 [2021-11-07 01:21:06,580 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:06,582 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:21:06,585 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:06,585 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 01:21:06,585 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:21:06,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:21:06,589 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:06,590 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:06,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-07 01:21:06,592 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:21:06,592 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:131, output treesize:110 [2021-11-07 01:21:06,596 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:06,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-07 01:21:06,601 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:06,605 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-11-07 01:21:06,609 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:06,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:21:06,615 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:06,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-11-07 01:21:06,626 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:06,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-07 01:21:06,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:21:06,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:21:06,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:21:06,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:06,688 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-07 01:21:06,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:21:06,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:21:06,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:21:06,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:21:06,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:21:06,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:21:06,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:21:06,745 INFO L180 QuantifierPusher]: treesize reduction 54, result has 50.0 percent of original size [2021-11-07 01:21:06,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-07 01:21:06,753 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:21:08,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:21:08,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:21:08,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 127 [2021-11-07 01:21:08,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596460184] [2021-11-07 01:21:08,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2021-11-07 01:21:08,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:21:08,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2021-11-07 01:21:08,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4295, Invalid=12735, Unknown=0, NotChecked=0, Total=17030 [2021-11-07 01:21:08,393 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 127 states, 127 states have (on average 1.0551181102362204) internal successors, (134), 127 states have internal predecessors, (134), 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 01:21:12,120 WARN L838 $PredicateComparison]: unable to prove that (and (< (mod (+ c_ULTIMATE.start_main_~v~0 5) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 33) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 51) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 7) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 24) 4294967296) 268435455) (< (mod (+ 56 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 32) 4294967296) 268435455) (< (mod c_ULTIMATE.start_main_~v~0 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 59) 4294967296) 268435455) (< (mod (+ 41 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 8) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 2) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 52) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 44) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 36) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 61) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 45) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 3) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 34) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 48) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 29) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 37) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 47) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 31) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 26) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 9) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 22) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 14) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 58) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 55) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 35) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 46) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 42) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 25) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 27) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 15) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 39) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 21) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 43) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 54) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 16) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 49) 4294967296) 268435455) (< (mod (+ 23 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 57) 4294967296) 268435455) (< (mod (+ 19 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 50) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 1) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 60) 4294967296) 268435455) (< (mod (+ 40 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 53 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 10) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 12) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 30) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 38) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 18) 4294967296) 268435455)) is different from false [2021-11-07 01:23:05,007 WARN L207 SmtUtils]: Spent 28.86 s on a formula simplification. DAG size of input: 246 DAG size of output: 10 [2021-11-07 01:23:07,034 WARN L838 $PredicateComparison]: unable to prove that (and (< (mod (+ c_ULTIMATE.start_main_~v~0 5) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 33) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 51) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 7) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 24) 4294967296) 268435455) (< (mod (+ 56 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 32) 4294967296) 268435455) (< (mod c_ULTIMATE.start_main_~v~0 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 59) 4294967296) 268435455) (< (mod (+ 41 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 8) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 2) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 52) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 44) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 36) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 45) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 3) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 34) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 48) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 29) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 37) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 47) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 31) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 26) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 9) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 22) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 14) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 58) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 55) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 35) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 46) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 42) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 25) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 27) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 15) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 39) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 21) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 43) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 54) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 16) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 49) 4294967296) 268435455) (< (mod (+ 23 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 57) 4294967296) 268435455) (< (mod (+ 19 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 50) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 1) 4294967296) 268435455) (< (mod (+ 40 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 53 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 10) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 12) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 30) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 38) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 18) 4294967296) 268435455)) is different from false [2021-11-07 01:23:09,046 WARN L838 $PredicateComparison]: unable to prove that (and (< (mod (+ c_ULTIMATE.start_main_~v~0 5) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 33) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 51) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 7) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 24) 4294967296) 268435455) (< (mod (+ 56 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 32) 4294967296) 268435455) (< (mod c_ULTIMATE.start_main_~v~0 4294967296) 268435455) (< (mod (+ 41 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 8) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 2) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 52) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 44) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 36) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 45) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 3) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 34) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 48) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 29) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 37) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 47) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 31) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 26) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 9) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 22) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 14) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 58) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 55) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 35) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 46) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 42) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 25) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 27) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 15) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 39) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 21) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 43) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 54) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 16) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 49) 4294967296) 268435455) (< (mod (+ 23 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 57) 4294967296) 268435455) (< (mod (+ 19 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 50) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 1) 4294967296) 268435455) (< (mod (+ 40 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 53 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 10) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 12) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 30) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 38) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 18) 4294967296) 268435455)) is different from false [2021-11-07 01:23:11,057 WARN L838 $PredicateComparison]: unable to prove that (and (< (mod (+ c_ULTIMATE.start_main_~v~0 5) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 33) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 51) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 7) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 24) 4294967296) 268435455) (< (mod (+ 56 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 32) 4294967296) 268435455) (< (mod c_ULTIMATE.start_main_~v~0 4294967296) 268435455) (< (mod (+ 41 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 8) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 2) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 52) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 44) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 36) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 45) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 3) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 34) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 48) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 29) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 37) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 47) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 31) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 26) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 9) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 22) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 14) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 55) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 35) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 46) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 42) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 25) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 27) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 15) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 39) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 21) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 43) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 54) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 16) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 49) 4294967296) 268435455) (< (mod (+ 23 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 57) 4294967296) 268435455) (< (mod (+ 19 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 50) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 1) 4294967296) 268435455) (< (mod (+ 40 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 53 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 10) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 12) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 30) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 38) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 18) 4294967296) 268435455)) is different from false [2021-11-07 01:23:13,067 WARN L838 $PredicateComparison]: unable to prove that (and (< (mod (+ c_ULTIMATE.start_main_~v~0 5) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 33) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 51) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 7) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 24) 4294967296) 268435455) (< (mod (+ 56 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 32) 4294967296) 268435455) (< (mod c_ULTIMATE.start_main_~v~0 4294967296) 268435455) (< (mod (+ 41 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 8) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 2) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 52) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 44) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 36) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 45) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 3) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 34) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 48) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 29) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 37) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 47) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 31) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 26) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 9) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 22) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 14) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 55) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 35) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 46) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 42) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 25) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 27) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 15) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 39) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 21) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 43) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 54) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 16) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 49) 4294967296) 268435455) (< (mod (+ 23 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ 19 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 50) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 1) 4294967296) 268435455) (< (mod (+ 40 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 53 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 10) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 12) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 30) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 38) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 18) 4294967296) 268435455)) is different from false [2021-11-07 01:23:15,095 WARN L838 $PredicateComparison]: unable to prove that (and (< (mod (+ c_ULTIMATE.start_main_~v~0 5) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 33) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 51) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 7) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 24) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 32) 4294967296) 268435455) (< (mod c_ULTIMATE.start_main_~v~0 4294967296) 268435455) (< (mod (+ 41 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 8) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 2) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 52) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 44) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 36) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 45) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 3) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 34) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 48) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 29) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 37) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 47) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 31) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 26) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 9) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 22) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 14) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 55) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 35) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 46) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 42) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 25) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 27) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 15) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 39) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 21) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 43) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 54) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 16) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 49) 4294967296) 268435455) (< (mod (+ 23 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ 19 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 50) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 1) 4294967296) 268435455) (< (mod (+ 40 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 53 c_ULTIMATE.start_main_~v~0) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 10) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 12) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 30) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 38) 4294967296) 268435455) (< (mod (+ c_ULTIMATE.start_main_~v~0 18) 4294967296) 268435455)) is different from false [2021-11-07 01:25:30,896 WARN L207 SmtUtils]: Spent 44.10 s on a formula simplification. DAG size of input: 222 DAG size of output: 10 [2021-11-07 01:27:19,792 WARN L207 SmtUtils]: Spent 21.38 s on a formula simplification. DAG size of input: 218 DAG size of output: 10