./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58e0ac80b52681cc0cdead13de3f6425618df79dffe8d2a1da55e71c89383d0a .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:56:11,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:56:11,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:56:11,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:56:11,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:56:11,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:56:11,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:56:11,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:56:11,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:56:11,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:56:11,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:56:11,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:56:11,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:56:11,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:56:11,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:56:11,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:56:11,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:56:11,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:56:11,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:56:11,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:56:11,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:56:11,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:56:11,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:56:11,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:56:11,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:56:11,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:56:11,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:56:11,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:56:11,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:56:11,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:56:11,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:56:11,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:56:11,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:56:11,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:56:11,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:56:11,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:56:11,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:56:11,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:56:11,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:56:11,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:56:11,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:56:11,204 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:56:11,255 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:56:11,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:56:11,257 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:56:11,258 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:56:11,258 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:56:11,258 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:56:11,259 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:56:11,259 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:56:11,266 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:56:11,267 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:56:11,268 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:56:11,269 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:56:11,269 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:56:11,269 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:56:11,269 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:56:11,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:56:11,271 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:56:11,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:56:11,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:56:11,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:56:11,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:56:11,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:56:11,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:56:11,272 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:56:11,272 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:56:11,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:56:11,273 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:56:11,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:56:11,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:56:11,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:56:11,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:56:11,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:56:11,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:56:11,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:56:11,277 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:56:11,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:56:11,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:56:11,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:56:11,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:56:11,278 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_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58e0ac80b52681cc0cdead13de3f6425618df79dffe8d2a1da55e71c89383d0a [2021-10-29 04:56:11,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:56:11,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:56:11,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:56:11,626 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:56:11,627 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:56:11,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c [2021-10-29 04:56:11,708 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/data/e0b4b6274/14d493bab32c4a0abcb3bf79da039215/FLAG0f40591f7 [2021-10-29 04:56:12,177 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:56:12,177 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c [2021-10-29 04:56:12,183 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/data/e0b4b6274/14d493bab32c4a0abcb3bf79da039215/FLAG0f40591f7 [2021-10-29 04:56:12,564 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/data/e0b4b6274/14d493bab32c4a0abcb3bf79da039215 [2021-10-29 04:56:12,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:56:12,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:56:12,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:56:12,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:56:12,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:56:12,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:56:12" (1/1) ... [2021-10-29 04:56:12,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc217f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:12, skipping insertion in model container [2021-10-29 04:56:12,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:56:12" (1/1) ... [2021-10-29 04:56:12,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:56:12,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:56:12,756 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_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c[573,586] [2021-10-29 04:56:12,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:56:12,781 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:56:12,794 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_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c[573,586] [2021-10-29 04:56:12,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:56:12,813 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:56:12,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:12 WrapperNode [2021-10-29 04:56:12,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:56:12,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:56:12,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:56:12,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:56:12,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:12" (1/1) ... [2021-10-29 04:56:12,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:12" (1/1) ... [2021-10-29 04:56:12,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:56:12,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:56:12,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:56:12,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:56:12,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:12" (1/1) ... [2021-10-29 04:56:12,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:12" (1/1) ... [2021-10-29 04:56:12,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:12" (1/1) ... [2021-10-29 04:56:12,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:12" (1/1) ... [2021-10-29 04:56:12,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:12" (1/1) ... [2021-10-29 04:56:12,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:12" (1/1) ... [2021-10-29 04:56:12,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:12" (1/1) ... [2021-10-29 04:56:12,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:56:12,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:56:12,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:56:12,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:56:12,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:12" (1/1) ... [2021-10-29 04:56:12,923 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:56:12,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:56:12,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:56:12,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:56:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:56:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:56:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:56:13,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:56:13,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:56:13,439 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-29 04:56:13,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:56:13 BoogieIcfgContainer [2021-10-29 04:56:13,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:56:13,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:56:13,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:56:13,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:56:13,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:56:12" (1/3) ... [2021-10-29 04:56:13,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bde9303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:56:13, skipping insertion in model container [2021-10-29 04:56:13,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:56:12" (2/3) ... [2021-10-29 04:56:13,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bde9303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:56:13, skipping insertion in model container [2021-10-29 04:56:13,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:56:13" (3/3) ... [2021-10-29 04:56:13,455 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound10.c [2021-10-29 04:56:13,460 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:56:13,461 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-29 04:56:13,523 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:56:13,529 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:56:13,529 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-29 04:56:13,543 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:13,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 04:56:13,555 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:56:13,556 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 04:56:13,557 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:56:13,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:56:13,562 INFO L85 PathProgramCache]: Analyzing trace with hash 100327247, now seen corresponding path program 1 times [2021-10-29 04:56:13,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:56:13,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204702604] [2021-10-29 04:56:13,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:13,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:56:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:13,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:13,714 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:56:13,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204702604] [2021-10-29 04:56:13,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204702604] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:56:13,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:56:13,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:56:13,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261600082] [2021-10-29 04:56:13,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 04:56:13,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:56:13,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 04:56:13,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:56:13,739 INFO L87 Difference]: Start difference. First operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:13,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:56:13,753 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2021-10-29 04:56:13,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:56:13,755 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-29 04:56:13,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:56:13,763 INFO L225 Difference]: With dead ends: 25 [2021-10-29 04:56:13,763 INFO L226 Difference]: Without dead ends: 11 [2021-10-29 04:56:13,766 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:56:13,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-29 04:56:13,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-29 04:56:13,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:13,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-10-29 04:56:13,797 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2021-10-29 04:56:13,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:56:13,797 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-29 04:56:13,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:13,798 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-10-29 04:56:13,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 04:56:13,799 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:56:13,799 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 04:56:13,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:56:13,799 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:56:13,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:56:13,801 INFO L85 PathProgramCache]: Analyzing trace with hash 99468274, now seen corresponding path program 1 times [2021-10-29 04:56:13,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:56:13,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847059892] [2021-10-29 04:56:13,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:13,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:56:13,821 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 04:56:13,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783135714] [2021-10-29 04:56:13,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:13,822 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:56:13,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:56:13,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:56:13,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 04:56:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:13,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 04:56:13,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:56:14,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:14,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:56:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:14,255 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:56:14,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847059892] [2021-10-29 04:56:14,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:56:14,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783135714] [2021-10-29 04:56:14,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783135714] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:56:14,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:56:14,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 04:56:14,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373664033] [2021-10-29 04:56:14,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:56:14,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:56:14,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:56:14,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:56:14,264 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:14,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:56:14,330 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-10-29 04:56:14,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:56:14,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-29 04:56:14,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:56:14,332 INFO L225 Difference]: With dead ends: 25 [2021-10-29 04:56:14,333 INFO L226 Difference]: Without dead ends: 23 [2021-10-29 04:56:14,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:56:14,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-29 04:56:14,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 14. [2021-10-29 04:56:14,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 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) [2021-10-29 04:56:14,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-29 04:56:14,339 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2021-10-29 04:56:14,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:56:14,339 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-29 04:56:14,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:14,339 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-29 04:56:14,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 04:56:14,340 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:56:14,340 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 04:56:14,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:14,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:56:14,560 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:56:14,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:56:14,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1211488473, now seen corresponding path program 1 times [2021-10-29 04:56:14,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:56:14,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233665525] [2021-10-29 04:56:14,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:14,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:56:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:14,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:14,660 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:56:14,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233665525] [2021-10-29 04:56:14,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233665525] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:56:14,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:56:14,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:56:14,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003760995] [2021-10-29 04:56:14,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:56:14,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:56:14,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:56:14,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:56:14,662 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:14,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:56:14,675 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-10-29 04:56:14,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:56:14,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-10-29 04:56:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:56:14,676 INFO L225 Difference]: With dead ends: 18 [2021-10-29 04:56:14,677 INFO L226 Difference]: Without dead ends: 14 [2021-10-29 04:56:14,677 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:56:14,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-29 04:56:14,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-29 04:56:14,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:14,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-29 04:56:14,680 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 6 [2021-10-29 04:56:14,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:56:14,680 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-29 04:56:14,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:14,681 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-29 04:56:14,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 04:56:14,681 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:56:14,682 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:56:14,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 04:56:14,682 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:56:14,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:56:14,683 INFO L85 PathProgramCache]: Analyzing trace with hash -263176832, now seen corresponding path program 1 times [2021-10-29 04:56:14,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:56:14,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509766817] [2021-10-29 04:56:14,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:14,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:56:14,696 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 04:56:14,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560971592] [2021-10-29 04:56:14,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:14,696 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:56:14,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:56:14,698 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:56:14,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 04:56:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:14,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 04:56:14,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:56:14,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:14,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:56:15,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:15,026 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:56:15,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509766817] [2021-10-29 04:56:15,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:56:15,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560971592] [2021-10-29 04:56:15,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560971592] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:56:15,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:56:15,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-10-29 04:56:15,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890053104] [2021-10-29 04:56:15,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 04:56:15,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:56:15,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 04:56:15,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-29 04:56:15,032 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:15,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:56:15,143 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-29 04:56:15,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:56:15,144 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 04:56:15,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:56:15,144 INFO L225 Difference]: With dead ends: 18 [2021-10-29 04:56:15,145 INFO L226 Difference]: Without dead ends: 12 [2021-10-29 04:56:15,146 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-29 04:56:15,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-29 04:56:15,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-10-29 04:56:15,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-29 04:56:15,151 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2021-10-29 04:56:15,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:56:15,151 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-29 04:56:15,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:15,152 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-29 04:56:15,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:56:15,153 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:56:15,160 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:56:15,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:15,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:56:15,380 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:56:15,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:56:15,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1349036158, now seen corresponding path program 1 times [2021-10-29 04:56:15,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:56:15,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123850700] [2021-10-29 04:56:15,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:15,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:56:15,393 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 04:56:15,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [302463444] [2021-10-29 04:56:15,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:15,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:56:15,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:56:15,401 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:56:15,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 04:56:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:56:15,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 04:56:15,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:56:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:15,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:56:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:15,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:56:15,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123850700] [2021-10-29 04:56:15,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:56:15,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302463444] [2021-10-29 04:56:15,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302463444] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:56:15,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1740034034] [2021-10-29 04:56:15,622 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-29 04:56:15,622 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:56:15,626 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:56:15,632 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:56:15,633 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:56:15,706 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.1 percent of original size [2021-10-29 04:56:15,716 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:15,717 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:15,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 04:56:15,719 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:15,720 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:15,721 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 04:56:15,730 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-10-29 04:56:15,767 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_21|], 21=[|v_#valid_22|]} [2021-10-29 04:56:15,795 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 04:56:15,796 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:15,797 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 04:56:15,798 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:15,798 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 04:56:15,799 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:56:15,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:15,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:15,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:15,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 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 [2021-10-29 04:56:15,828 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:15,829 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:56:15,830 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:15,831 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:56:15,831 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:56:15,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:15,879 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:15,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:15,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:15,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:15,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:15,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:15,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:15,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:15,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:15,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:15,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-29 04:56:15,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:15,909 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 04:56:15,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:15,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 04:56:15,911 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 04:56:15,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:15,943 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:15,960 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:15,964 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-29 04:56:15,965 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:56:15,965 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:312, output treesize:131 [2021-10-29 04:56:15,980 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:15,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-10-29 04:56:16,005 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.2 percent of original size [2021-10-29 04:56:16,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-10-29 04:56:16,026 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:16,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-10-29 04:56:16,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:16,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:16,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:16,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:16,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:16,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:16,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:16,167 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-10-29 04:56:16,178 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:16,192 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-10-29 04:56:16,201 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:16,213 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:16,216 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:16,245 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-10-29 04:56:16,247 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:16,251 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:16,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-10-29 04:56:16,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 294 [2021-10-29 04:56:16,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:16,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:16,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:16,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:16,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:16,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:16,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:16,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:16,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:16,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:16,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:16,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:16,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:16,444 INFO L180 QuantifierPusher]: treesize reduction 36, result has 66.7 percent of original size [2021-10-29 04:56:16,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-29 04:56:16,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:16,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-29 04:56:16,462 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:16,466 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:16,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:16,476 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-29 04:56:16,477 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:16,482 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:16,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-29 04:56:16,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-10-29 04:56:16,511 INFO L180 QuantifierPusher]: treesize reduction 36, result has 66.7 percent of original size [2021-10-29 04:56:16,514 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-29 04:56:16,518 INFO L180 QuantifierPusher]: treesize reduction 4, result has 94.5 percent of original size [2021-10-29 04:56:16,520 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-10-29 04:56:16,530 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:16,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-29 04:56:16,541 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:56:17,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:56:17,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 04:56:17,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-29 04:56:17,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521531976] [2021-10-29 04:56:17,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 04:56:17,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:56:17,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 04:56:17,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-29 04:56:17,133 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:17,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:56:17,185 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-10-29 04:56:17,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 04:56:17,185 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 04:56:17,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:56:17,186 INFO L225 Difference]: With dead ends: 27 [2021-10-29 04:56:17,186 INFO L226 Difference]: Without dead ends: 23 [2021-10-29 04:56:17,187 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-10-29 04:56:17,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-29 04:56:17,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-29 04:56:17,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:17,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-10-29 04:56:17,193 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 10 [2021-10-29 04:56:17,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:56:17,193 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-10-29 04:56:17,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:17,194 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-10-29 04:56:17,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 04:56:17,194 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:56:17,195 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2021-10-29 04:56:17,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:17,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:56:17,408 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:56:17,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:56:17,409 INFO L85 PathProgramCache]: Analyzing trace with hash 853809027, now seen corresponding path program 2 times [2021-10-29 04:56:17,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:56:17,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918710707] [2021-10-29 04:56:17,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:17,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:56:17,417 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 04:56:17,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [713284672] [2021-10-29 04:56:17,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 04:56:17,418 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:56:17,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:56:17,419 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:56:17,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-29 04:56:17,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-29 04:56:17,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 04:56:17,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-29 04:56:17,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:56:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:17,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:56:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:56:17,744 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:56:17,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918710707] [2021-10-29 04:56:17,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:56:17,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713284672] [2021-10-29 04:56:17,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713284672] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:56:17,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1581998294] [2021-10-29 04:56:17,748 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-29 04:56:17,748 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:56:17,748 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:56:17,749 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:56:17,749 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:56:17,757 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.1 percent of original size [2021-10-29 04:56:17,758 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:17,759 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:17,759 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 04:56:17,760 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:17,760 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:17,761 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 04:56:17,764 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-10-29 04:56:17,769 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_22|], 21=[|v_#valid_23|]} [2021-10-29 04:56:17,793 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 04:56:17,794 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:17,794 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 04:56:17,795 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:17,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 04:56:17,795 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:56:17,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:17,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:17,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:17,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 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 [2021-10-29 04:56:17,808 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:17,808 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:56:17,809 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:17,810 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:56:17,810 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:56:17,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:17,818 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:17,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:17,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:17,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:17,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:17,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:17,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:17,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:17,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:17,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:56:17,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-29 04:56:17,841 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:17,843 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 04:56:17,844 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:17,845 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 04:56:17,845 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 04:56:17,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:17,852 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:17,855 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:17,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-29 04:56:17,859 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:56:17,859 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:312, output treesize:131 [2021-10-29 04:56:17,863 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:17,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-10-29 04:56:17,872 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.2 percent of original size [2021-10-29 04:56:17,876 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-10-29 04:56:17,882 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:17,888 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-10-29 04:56:17,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:17,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:17,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:17,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:17,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:17,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:17,938 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:17,943 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-10-29 04:56:17,949 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:17,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-10-29 04:56:17,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:17,970 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:17,972 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:17,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-10-29 04:56:17,986 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:17,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:18,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-10-29 04:56:18,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 294 [2021-10-29 04:56:18,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:18,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:18,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:18,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:18,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:18,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:18,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:18,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:18,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:18,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:18,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:18,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:18,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:56:18,144 INFO L180 QuantifierPusher]: treesize reduction 36, result has 66.7 percent of original size [2021-10-29 04:56:18,147 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-29 04:56:18,150 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:18,155 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-29 04:56:18,160 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:18,168 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:18,170 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:18,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-29 04:56:18,179 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:56:18,181 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:18,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-29 04:56:18,194 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-10-29 04:56:18,202 INFO L180 QuantifierPusher]: treesize reduction 36, result has 66.7 percent of original size [2021-10-29 04:56:18,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-29 04:56:18,208 INFO L180 QuantifierPusher]: treesize reduction 4, result has 94.5 percent of original size [2021-10-29 04:56:18,210 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-10-29 04:56:18,219 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:56:18,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-29 04:56:18,224 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:56:18,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:56:18,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 04:56:18,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-29 04:56:18,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107964428] [2021-10-29 04:56:18,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-29 04:56:18,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:56:18,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-29 04:56:18,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2021-10-29 04:56:18,829 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:18,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:56:18,977 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2021-10-29 04:56:18,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-29 04:56:18,978 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-29 04:56:18,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:56:18,979 INFO L225 Difference]: With dead ends: 51 [2021-10-29 04:56:18,979 INFO L226 Difference]: Without dead ends: 47 [2021-10-29 04:56:18,980 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2021-10-29 04:56:18,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-29 04:56:18,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-29 04:56:18,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 46 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:18,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2021-10-29 04:56:18,988 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 22 [2021-10-29 04:56:18,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:56:18,989 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2021-10-29 04:56:18,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:56:18,989 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2021-10-29 04:56:18,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-29 04:56:18,991 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:56:18,991 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2021-10-29 04:56:19,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:19,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-29 04:56:19,204 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:56:19,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:56:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash 353376013, now seen corresponding path program 3 times [2021-10-29 04:56:19,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:56:19,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714650537] [2021-10-29 04:56:19,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:56:19,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:56:19,215 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 04:56:19,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927646459] [2021-10-29 04:56:19,215 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 04:56:19,216 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:56:19,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:56:19,217 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:56:19,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 04:56:19,341 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 04:56:19,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-29 04:56:19,342 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:56:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:56:19,424 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 04:56:19,425 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:56:19,426 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:56:19,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:56:19,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:19,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:56:19,659 INFO L731 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2021-10-29 04:56:19,663 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:56:19,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:56:19 BoogieIcfgContainer [2021-10-29 04:56:19,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:56:19,754 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:56:19,755 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:56:19,755 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:56:19,755 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:56:13" (3/4) ... [2021-10-29 04:56:19,757 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 04:56:19,841 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:56:19,841 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:56:19,844 INFO L168 Benchmark]: Toolchain (without parser) took 7274.51 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 65.5 MB in the beginning and 57.4 MB in the end (delta: 8.2 MB). Peak memory consumption was 48.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:19,845 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 88.1 MB. Free memory was 63.5 MB in the beginning and 63.4 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:56:19,845 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.08 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 64.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:19,848 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.76 ms. Allocated memory is still 88.1 MB. Free memory was 64.0 MB in the beginning and 62.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:19,848 INFO L168 Benchmark]: Boogie Preprocessor took 54.81 ms. Allocated memory is still 88.1 MB. Free memory was 62.5 MB in the beginning and 61.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:56:19,848 INFO L168 Benchmark]: RCFGBuilder took 528.46 ms. Allocated memory is still 88.1 MB. Free memory was 61.5 MB in the beginning and 47.4 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:19,849 INFO L168 Benchmark]: TraceAbstraction took 6309.91 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 47.1 MB in the beginning and 61.6 MB in the end (delta: -14.5 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:19,849 INFO L168 Benchmark]: Witness Printer took 87.16 ms. Allocated memory is still 130.0 MB. Free memory was 61.6 MB in the beginning and 57.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:19,856 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 88.1 MB. Free memory was 63.5 MB in the beginning and 63.4 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.08 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 64.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.76 ms. Allocated memory is still 88.1 MB. Free memory was 64.0 MB in the beginning and 62.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.81 ms. Allocated memory is still 88.1 MB. Free memory was 62.5 MB in the beginning and 61.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 528.46 ms. Allocated memory is still 88.1 MB. Free memory was 61.5 MB in the beginning and 47.4 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6309.91 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 47.1 MB in the beginning and 61.6 MB in the end (delta: -14.5 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. * Witness Printer took 87.16 ms. Allocated memory is still 130.0 MB. Free memory was 61.6 MB in the beginning and 57.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L13] COND FALSE !(!cond) [L13] COND FALSE !(!cond) [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0] [L36] EXPR counter++ VAL [counter=1] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=1] [L36] EXPR counter++ VAL [counter=2] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=2] [L36] EXPR counter++ VAL [counter=3] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=3] [L36] EXPR counter++ VAL [counter=4] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=4] [L36] EXPR counter++ VAL [counter=5] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=5] [L36] EXPR counter++ VAL [counter=6] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=6] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=6] [L36] EXPR counter++ VAL [counter=7] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=7] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=7] [L36] EXPR counter++ VAL [counter=8] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=8] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=8] [L36] EXPR counter++ VAL [counter=9] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=9] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=9] [L36] EXPR counter++ VAL [counter=10] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=10] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=10] [L36] EXPR counter++ VAL [counter=11] [L36] COND FALSE !(counter++<10) [L16] COND TRUE !(cond) VAL [counter=11] [L18] reach_error() VAL [counter=11] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 6.1s, OverallIterations: 7, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 51 SDslu, 114 SDs, 0 SdLazy, 87 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=6, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 91 ConstructedInterpolants, 2 QuantifiedInterpolants, 302 SizeOfPredicates, 25 NumberOfNonLiveVariables, 311 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 0/68 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-29 04:56:19,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d32e51d-79d1-4fcd-ad38-0c16094c1b2f/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...