./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 942b28ff7c0583b7db8395d2c315e70afc8fe68ba69d39faf867ac75d7628edb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:56:04,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:56:04,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:56:04,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:56:04,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:56:04,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:56:04,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:56:04,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:56:04,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:56:04,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:56:04,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:56:04,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:56:04,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:56:04,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:56:04,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:56:04,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:56:04,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:56:04,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:56:04,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:56:04,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:56:04,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:56:04,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:56:04,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:56:04,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:56:04,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:56:04,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:56:04,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:56:04,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:56:04,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:56:04,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:56:04,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:56:04,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:56:04,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:56:04,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:56:04,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:56:04,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:56:04,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:56:04,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:56:04,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:56:04,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:56:04,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:56:04,649 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:56:04,673 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:56:04,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:56:04,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:56:04,675 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:56:04,675 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:56:04,675 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:56:04,676 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:56:04,676 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:56:04,676 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:56:04,676 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:56:04,677 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:56:04,677 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:56:04,677 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:56:04,677 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:56:04,678 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:56:04,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:56:04,679 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:56:04,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:56:04,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:56:04,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:56:04,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:56:04,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:56:04,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:56:04,680 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:56:04,681 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:56:04,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:56:04,681 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:56:04,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:56:04,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:56:04,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:56:04,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:56:04,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:56:04,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:56:04,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:56:04,683 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:56:04,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:56:04,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:56:04,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:56:04,684 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:56:04,684 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_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 942b28ff7c0583b7db8395d2c315e70afc8fe68ba69d39faf867ac75d7628edb [2021-10-24 09:56:04,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:56:04,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:56:04,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:56:04,979 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:56:04,980 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:56:04,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c [2021-10-24 09:56:05,055 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/data/ec497824d/4faeb537683447d1b64eba793479207b/FLAG48b4941b2 [2021-10-24 09:56:05,524 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:56:05,525 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c [2021-10-24 09:56:05,533 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/data/ec497824d/4faeb537683447d1b64eba793479207b/FLAG48b4941b2 [2021-10-24 09:56:05,928 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/data/ec497824d/4faeb537683447d1b64eba793479207b [2021-10-24 09:56:05,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:56:05,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:56:05,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:56:05,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:56:05,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:56:05,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:56:05" (1/1) ... [2021-10-24 09:56:05,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41870a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:05, skipping insertion in model container [2021-10-24 09:56:05,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:56:05" (1/1) ... [2021-10-24 09:56:05,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:56:05,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:56:06,230 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_859cac5e-71dc-4b49-877d-59d41f131c98/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c[588,601] [2021-10-24 09:56:06,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:56:06,277 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:56:06,295 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_859cac5e-71dc-4b49-877d-59d41f131c98/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c[588,601] [2021-10-24 09:56:06,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:56:06,337 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:56:06,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:06 WrapperNode [2021-10-24 09:56:06,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:56:06,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:56:06,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:56:06,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:56:06,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:06" (1/1) ... [2021-10-24 09:56:06,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:06" (1/1) ... [2021-10-24 09:56:06,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:56:06,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:56:06,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:56:06,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:56:06,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:06" (1/1) ... [2021-10-24 09:56:06,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:06" (1/1) ... [2021-10-24 09:56:06,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:06" (1/1) ... [2021-10-24 09:56:06,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:06" (1/1) ... [2021-10-24 09:56:06,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:06" (1/1) ... [2021-10-24 09:56:06,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:06" (1/1) ... [2021-10-24 09:56:06,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:06" (1/1) ... [2021-10-24 09:56:06,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:56:06,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:56:06,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:56:06,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:56:06,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:06" (1/1) ... [2021-10-24 09:56:06,475 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:56:06,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:56:06,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:56:06,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:56:06,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:56:06,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:56:06,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:56:06,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:56:07,052 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:56:07,052 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2021-10-24 09:56:07,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:56:07 BoogieIcfgContainer [2021-10-24 09:56:07,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:56:07,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:56:07,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:56:07,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:56:07,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:56:05" (1/3) ... [2021-10-24 09:56:07,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4757a346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:56:07, skipping insertion in model container [2021-10-24 09:56:07,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:06" (2/3) ... [2021-10-24 09:56:07,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4757a346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:56:07, skipping insertion in model container [2021-10-24 09:56:07,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:56:07" (3/3) ... [2021-10-24 09:56:07,069 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound2.c [2021-10-24 09:56:07,075 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:56:07,075 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-10-24 09:56:07,146 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:56:07,156 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:56:07,156 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-24 09:56:07,175 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 47 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:07,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 09:56:07,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:56:07,183 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 09:56:07,184 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-24 09:56:07,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:56:07,193 INFO L82 PathProgramCache]: Analyzing trace with hash 5618680, now seen corresponding path program 1 times [2021-10-24 09:56:07,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:56:07,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822419280] [2021-10-24 09:56:07,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:07,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:56:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:56:07,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:07,518 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:56:07,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822419280] [2021-10-24 09:56:07,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822419280] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:56:07,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:56:07,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:56:07,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446092565] [2021-10-24 09:56:07,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:56:07,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:56:07,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:56:07,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:56:07,543 INFO L87 Difference]: Start difference. First operand has 48 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 47 states have internal predecessors, (60), 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 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:07,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:56:07,660 INFO L93 Difference]: Finished difference Result 92 states and 117 transitions. [2021-10-24 09:56:07,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:56:07,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-10-24 09:56:07,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:56:07,671 INFO L225 Difference]: With dead ends: 92 [2021-10-24 09:56:07,672 INFO L226 Difference]: Without dead ends: 43 [2021-10-24 09:56:07,675 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:56:07,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-24 09:56:07,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-10-24 09:56:07,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 41 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:07,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-10-24 09:56:07,721 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 4 [2021-10-24 09:56:07,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:56:07,722 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-10-24 09:56:07,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:07,723 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-10-24 09:56:07,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 09:56:07,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:56:07,723 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 09:56:07,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:56:07,724 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-24 09:56:07,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:56:07,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1104739931, now seen corresponding path program 1 times [2021-10-24 09:56:07,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:56:07,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201305023] [2021-10-24 09:56:07,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:07,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:56:07,743 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 09:56:07,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897312146] [2021-10-24 09:56:07,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:07,744 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:56:07,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:56:07,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:56:07,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 09:56:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:56:07,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 09:56:07,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:56:07,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:07,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:56:08,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:08,103 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:56:08,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201305023] [2021-10-24 09:56:08,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:56:08,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897312146] [2021-10-24 09:56:08,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897312146] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:56:08,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:56:08,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 09:56:08,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180048847] [2021-10-24 09:56:08,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 09:56:08,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:56:08,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 09:56:08,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:56:08,108 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:08,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:56:08,347 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2021-10-24 09:56:08,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:56:08,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-24 09:56:08,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:56:08,350 INFO L225 Difference]: With dead ends: 83 [2021-10-24 09:56:08,350 INFO L226 Difference]: Without dead ends: 81 [2021-10-24 09:56:08,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:56:08,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-24 09:56:08,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 46. [2021-10-24 09:56:08,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 45 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:08,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2021-10-24 09:56:08,376 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 6 [2021-10-24 09:56:08,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:56:08,376 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2021-10-24 09:56:08,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:08,377 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2021-10-24 09:56:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 09:56:08,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:56:08,378 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:56:08,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:56:08,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:56:08,579 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-24 09:56:08,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:56:08,580 INFO L82 PathProgramCache]: Analyzing trace with hash 798307678, now seen corresponding path program 1 times [2021-10-24 09:56:08,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:56:08,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433292132] [2021-10-24 09:56:08,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:08,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:56:08,596 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 09:56:08,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [988436237] [2021-10-24 09:56:08,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:08,597 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:56:08,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:56:08,598 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:56:08,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 09:56:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:56:08,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 09:56:08,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:56:08,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:08,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:56:08,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:08,841 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:56:08,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433292132] [2021-10-24 09:56:08,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:56:08,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988436237] [2021-10-24 09:56:08,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988436237] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:56:08,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:56:08,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 09:56:08,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244333031] [2021-10-24 09:56:08,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 09:56:08,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:56:08,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 09:56:08,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:56:08,846 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:08,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:56:08,970 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2021-10-24 09:56:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:56:08,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-24 09:56:08,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:56:08,975 INFO L225 Difference]: With dead ends: 81 [2021-10-24 09:56:08,975 INFO L226 Difference]: Without dead ends: 77 [2021-10-24 09:56:08,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.1ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:56:08,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-24 09:56:08,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 57. [2021-10-24 09:56:08,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.25) internal successors, (60), 56 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:08,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2021-10-24 09:56:08,990 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 8 [2021-10-24 09:56:08,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:56:08,990 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2021-10-24 09:56:08,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:08,991 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2021-10-24 09:56:08,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 09:56:08,991 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:56:08,992 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:56:09,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-24 09:56:09,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:56:09,208 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-24 09:56:09,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:56:09,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1625310975, now seen corresponding path program 1 times [2021-10-24 09:56:09,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:56:09,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606753439] [2021-10-24 09:56:09,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:09,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:56:09,223 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 09:56:09,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1338316124] [2021-10-24 09:56:09,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:09,224 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:56:09,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:56:09,225 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:56:09,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-24 09:56:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:56:09,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 09:56:09,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:56:09,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:09,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:56:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:09,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:56:09,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606753439] [2021-10-24 09:56:09,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:56:09,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338316124] [2021-10-24 09:56:09,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338316124] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:56:09,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:56:09,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 09:56:09,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205657797] [2021-10-24 09:56:09,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 09:56:09,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:56:09,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 09:56:09,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:56:09,564 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:10,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:56:10,043 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2021-10-24 09:56:10,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 09:56:10,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 09:56:10,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:56:10,045 INFO L225 Difference]: With dead ends: 114 [2021-10-24 09:56:10,045 INFO L226 Difference]: Without dead ends: 88 [2021-10-24 09:56:10,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 43.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:56:10,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-24 09:56:10,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 74. [2021-10-24 09:56:10,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 73 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:10,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-10-24 09:56:10,060 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 10 [2021-10-24 09:56:10,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:56:10,060 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-10-24 09:56:10,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:10,060 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-10-24 09:56:10,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-24 09:56:10,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:56:10,061 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:56:10,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-24 09:56:10,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:56:10,278 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-24 09:56:10,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:56:10,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1632620878, now seen corresponding path program 1 times [2021-10-24 09:56:10,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:56:10,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585705928] [2021-10-24 09:56:10,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:10,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:56:10,299 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 09:56:10,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1556456976] [2021-10-24 09:56:10,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:10,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:56:10,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:56:10,301 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:56:10,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-24 09:56:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:56:10,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-24 09:56:10,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:56:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:10,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:56:10,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:10,761 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:56:10,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585705928] [2021-10-24 09:56:10,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:56:10,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556456976] [2021-10-24 09:56:10,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556456976] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:56:10,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1226451695] [2021-10-24 09:56:10,793 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-10-24 09:56:10,794 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 09:56:10,798 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 09:56:10,804 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 09:56:10,805 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 09:56:10,850 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:10,855 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:56:10,856 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:10,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 09:56:10,860 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:56:10,861 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:10,862 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 09:56:10,882 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-10-24 09:56:10,918 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-10-24 09:56:10,935 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 09:56:10,936 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:10,936 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:10,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:10,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:10,937 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:10,947 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 09:56:10,948 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:10,948 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:10,948 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:10,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:10,949 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:10,958 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 09:56:10,958 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:10,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:10,959 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:10,960 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:10,960 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:10,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:10,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:10,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:10,994 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 [2021-10-24 09:56:10,995 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:10,996 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:56:10,996 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:10,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:56:10,997 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:11,006 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 09:56:11,007 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:11,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:11,009 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:11,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,062 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:11,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:11,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:11,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:11,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:11,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:11,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:11,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:11,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:11,103 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 [2021-10-24 09:56:11,104 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,108 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 09:56:11,110 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 09:56:11,113 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:11,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,165 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,173 INFO L180 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size [2021-10-24 09:56:11,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-10-24 09:56:11,186 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 09:56:11,187 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:786, output treesize:130 [2021-10-24 09:56:11,203 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-10-24 09:56:11,232 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,249 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-10-24 09:56:11,261 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 200 [2021-10-24 09:56:11,293 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-10-24 09:56:11,313 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 223 [2021-10-24 09:56:11,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-10-24 09:56:11,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 233 [2021-10-24 09:56:11,403 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-10-24 09:56:11,438 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 259 [2021-10-24 09:56:11,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,600 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,616 INFO L185 QuantifierPusher]: treesize reduction 36, result has 72.3 percent of original size 94 [2021-10-24 09:56:11,623 INFO L180 QuantifierPusher]: treesize reduction 36, result has 77.2 percent of original size [2021-10-24 09:56:11,629 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-24 09:56:11,635 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-10-24 09:56:11,655 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,665 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-10-24 09:56:11,670 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,677 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-10-24 09:56:11,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-24 09:56:11,704 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,722 INFO L185 QuantifierPusher]: treesize reduction 36, result has 72.3 percent of original size 94 [2021-10-24 09:56:11,732 INFO L180 QuantifierPusher]: treesize reduction 36, result has 77.2 percent of original size [2021-10-24 09:56:11,741 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-24 09:56:11,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,880 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:11,888 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-10-24 09:56:11,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,933 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,950 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:11,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:12,008 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.0 percent of original size [2021-10-24 09:56:12,012 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-24 09:56:12,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:12,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:12,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:12,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:12,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:12,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:12,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:12,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:12,061 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:12,066 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-24 09:56:12,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:12,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:12,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:12,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:12,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:12,091 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:12,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:12,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:12,133 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 09:56:14,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:56:14,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 09:56:14,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-24 09:56:14,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543530547] [2021-10-24 09:56:14,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 09:56:14,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:56:14,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 09:56:14,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-10-24 09:56:14,372 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:14,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:56:14,705 INFO L93 Difference]: Finished difference Result 82 states and 85 transitions. [2021-10-24 09:56:14,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 09:56:14,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 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 17 [2021-10-24 09:56:14,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:56:14,707 INFO L225 Difference]: With dead ends: 82 [2021-10-24 09:56:14,707 INFO L226 Difference]: Without dead ends: 74 [2021-10-24 09:56:14,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 2359.7ms TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2021-10-24 09:56:14,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-24 09:56:14,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2021-10-24 09:56:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 65 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:14,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-10-24 09:56:14,720 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 17 [2021-10-24 09:56:14,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:56:14,721 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-10-24 09:56:14,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:14,721 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-10-24 09:56:14,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-24 09:56:14,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:56:14,722 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:56:14,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-24 09:56:14,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:56:14,950 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-24 09:56:14,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:56:14,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1285756817, now seen corresponding path program 1 times [2021-10-24 09:56:14,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:56:14,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23684047] [2021-10-24 09:56:14,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:14,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:56:14,963 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 09:56:14,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022128826] [2021-10-24 09:56:14,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:14,964 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:56:14,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:56:14,965 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:56:14,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-24 09:56:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:56:15,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-24 09:56:15,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:56:15,238 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:15,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:56:15,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:15,325 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:56:15,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23684047] [2021-10-24 09:56:15,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:56:15,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022128826] [2021-10-24 09:56:15,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022128826] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:56:15,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [734716980] [2021-10-24 09:56:15,329 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-10-24 09:56:15,329 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 09:56:15,330 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 09:56:15,330 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 09:56:15,330 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 09:56:15,341 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,342 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:56:15,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,343 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 09:56:15,344 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:56:15,344 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 09:56:15,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-10-24 09:56:15,362 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 21=[|v_#valid_15|]} [2021-10-24 09:56:15,371 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 09:56:15,371 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:15,372 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:15,373 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:15,380 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 09:56:15,381 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,381 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:15,382 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,382 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:15,382 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:15,389 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 09:56:15,390 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:15,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:15,391 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:15,398 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 09:56:15,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:15,400 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:15,400 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:15,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:15,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:15,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:15,414 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 [2021-10-24 09:56:15,414 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,418 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:56:15,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,419 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:56:15,420 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:15,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,427 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:15,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:15,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:15,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:15,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:15,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:15,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:15,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:15,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:15,462 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 [2021-10-24 09:56:15,463 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 09:56:15,472 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 09:56:15,473 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:15,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,480 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,483 INFO L180 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size [2021-10-24 09:56:15,485 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-10-24 09:56:15,486 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 09:56:15,486 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:786, output treesize:130 [2021-10-24 09:56:15,496 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-10-24 09:56:15,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,521 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-10-24 09:56:15,532 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,541 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 200 [2021-10-24 09:56:15,549 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,556 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-10-24 09:56:15,563 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 330 [2021-10-24 09:56:15,584 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,592 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 306 [2021-10-24 09:56:15,600 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,612 INFO L185 QuantifierPusher]: treesize reduction 63, result has 80.5 percent of original size 260 [2021-10-24 09:56:15,622 INFO L180 QuantifierPusher]: treesize reduction 65, result has 81.7 percent of original size [2021-10-24 09:56:15,633 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-10-24 09:56:15,640 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 280 [2021-10-24 09:56:15,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,725 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,738 INFO L185 QuantifierPusher]: treesize reduction 36, result has 72.3 percent of original size 94 [2021-10-24 09:56:15,746 INFO L180 QuantifierPusher]: treesize reduction 36, result has 77.2 percent of original size [2021-10-24 09:56:15,750 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-24 09:56:15,753 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,758 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-10-24 09:56:15,761 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-10-24 09:56:15,770 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-10-24 09:56:15,779 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-24 09:56:15,797 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,807 INFO L185 QuantifierPusher]: treesize reduction 36, result has 72.3 percent of original size 94 [2021-10-24 09:56:15,816 INFO L180 QuantifierPusher]: treesize reduction 36, result has 77.2 percent of original size [2021-10-24 09:56:15,821 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-24 09:56:15,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,913 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:15,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-10-24 09:56:15,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,950 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:15,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,023 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.0 percent of original size [2021-10-24 09:56:16,026 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-24 09:56:16,032 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:16,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-24 09:56:16,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:16,145 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 09:56:18,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:56:18,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 09:56:18,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-24 09:56:18,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370300102] [2021-10-24 09:56:18,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 09:56:18,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:56:18,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 09:56:18,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-10-24 09:56:18,343 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:18,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:56:18,499 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2021-10-24 09:56:18,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 09:56:18,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 19 [2021-10-24 09:56:18,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:56:18,501 INFO L225 Difference]: With dead ends: 74 [2021-10-24 09:56:18,501 INFO L226 Difference]: Without dead ends: 72 [2021-10-24 09:56:18,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 2244.2ms TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-10-24 09:56:18,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-24 09:56:18,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2021-10-24 09:56:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.15) internal successors, (69), 65 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-10-24 09:56:18,512 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 19 [2021-10-24 09:56:18,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:56:18,513 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-10-24 09:56:18,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:18,513 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-10-24 09:56:18,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-24 09:56:18,514 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:56:18,514 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:56:18,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-24 09:56:18,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:56:18,715 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-24 09:56:18,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:56:18,715 INFO L82 PathProgramCache]: Analyzing trace with hash 596469692, now seen corresponding path program 1 times [2021-10-24 09:56:18,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:56:18,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36334143] [2021-10-24 09:56:18,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:18,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:56:18,727 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 09:56:18,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155572669] [2021-10-24 09:56:18,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:18,728 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:56:18,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:56:18,729 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:56:18,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-24 09:56:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:56:18,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-24 09:56:18,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:56:19,235 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:19,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:56:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:19,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:56:19,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36334143] [2021-10-24 09:56:19,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:56:19,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155572669] [2021-10-24 09:56:19,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155572669] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:56:19,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1373418059] [2021-10-24 09:56:19,764 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-10-24 09:56:19,764 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 09:56:19,765 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 09:56:19,765 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 09:56:19,765 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 09:56:19,785 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,786 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:56:19,787 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 09:56:19,788 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:56:19,788 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,789 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 09:56:19,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-10-24 09:56:19,810 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_15|], 21=[|v_#valid_16|]} [2021-10-24 09:56:19,818 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 09:56:19,819 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,819 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:19,820 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,821 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:19,821 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:19,828 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 09:56:19,829 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,830 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:19,830 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,830 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:19,831 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:19,840 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 09:56:19,840 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,841 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:19,841 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,841 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:19,842 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:19,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:19,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:19,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:19,864 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 [2021-10-24 09:56:19,865 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,880 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:56:19,881 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:56:19,881 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:19,890 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 09:56:19,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:19,892 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:19,892 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:19,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:19,899 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:19,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:19,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:19,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:19,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:19,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:19,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:19,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:19,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:19,922 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 [2021-10-24 09:56:19,923 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,925 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 09:56:19,926 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 09:56:19,927 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:19,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:19,933 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,935 INFO L180 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size [2021-10-24 09:56:19,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-10-24 09:56:19,938 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 09:56:19,938 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:786, output treesize:130 [2021-10-24 09:56:19,948 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,954 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-10-24 09:56:19,958 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,964 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-10-24 09:56:19,972 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 200 [2021-10-24 09:56:19,983 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:19,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-10-24 09:56:19,996 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:20,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 229 [2021-10-24 09:56:20,015 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:20,022 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 230 [2021-10-24 09:56:20,028 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:20,035 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 247 [2021-10-24 09:56:20,042 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:20,048 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 249 [2021-10-24 09:56:20,055 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:20,065 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 273 [2021-10-24 09:56:20,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,126 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.5 percent of original size [2021-10-24 09:56:20,130 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-24 09:56:20,133 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:20,137 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-24 09:56:20,141 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:20,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-10-24 09:56:20,149 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:20,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-10-24 09:56:20,157 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:20,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-10-24 09:56:20,165 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:20,170 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-24 09:56:20,182 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.5 percent of original size [2021-10-24 09:56:20,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-24 09:56:20,194 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:20,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-24 09:56:20,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,292 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:20,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-10-24 09:56:20,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,389 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.0 percent of original size [2021-10-24 09:56:20,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-24 09:56:20,398 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:20,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-24 09:56:20,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:20,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:20,473 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-24 09:56:20,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:20,518 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-24 09:56:20,788 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 09:56:33,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:56:33,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 09:56:33,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-24 09:56:33,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872434000] [2021-10-24 09:56:33,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-24 09:56:33,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:56:33,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-24 09:56:33,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2021-10-24 09:56:33,169 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:34,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:56:34,144 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2021-10-24 09:56:34,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-24 09:56:34,145 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-24 09:56:34,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:56:34,146 INFO L225 Difference]: With dead ends: 105 [2021-10-24 09:56:34,146 INFO L226 Difference]: Without dead ends: 103 [2021-10-24 09:56:34,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 12741.0ms TimeCoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2021-10-24 09:56:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-24 09:56:34,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 81. [2021-10-24 09:56:34,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 75 states have (on average 1.1466666666666667) internal successors, (86), 80 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:34,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2021-10-24 09:56:34,161 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 28 [2021-10-24 09:56:34,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:56:34,162 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2021-10-24 09:56:34,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:34,162 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2021-10-24 09:56:34,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-24 09:56:34,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:56:34,164 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:56:34,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-24 09:56:34,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:56:34,378 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-24 09:56:34,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:56:34,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1976881759, now seen corresponding path program 1 times [2021-10-24 09:56:34,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:56:34,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512400594] [2021-10-24 09:56:34,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:34,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:56:34,387 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 09:56:34,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2147414915] [2021-10-24 09:56:34,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:34,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:56:34,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:56:34,389 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:56:34,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-24 09:56:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:56:34,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-24 09:56:34,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:56:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:35,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:56:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:35,488 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:56:35,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512400594] [2021-10-24 09:56:35,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:56:35,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147414915] [2021-10-24 09:56:35,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147414915] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:56:35,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2043450233] [2021-10-24 09:56:35,493 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-10-24 09:56:35,494 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 09:56:35,494 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 09:56:35,494 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 09:56:35,494 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 09:56:35,505 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,510 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:56:35,511 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,512 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 09:56:35,512 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:56:35,513 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,513 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 09:56:35,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-10-24 09:56:35,534 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_16|], 21=[|v_#valid_17|]} [2021-10-24 09:56:35,542 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 09:56:35,543 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:35,544 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,544 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:35,545 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:35,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:35,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:35,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:35,566 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 [2021-10-24 09:56:35,567 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,567 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:56:35,568 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:56:35,569 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:35,578 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 09:56:35,578 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,579 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:35,579 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,579 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:35,580 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:35,587 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 09:56:35,588 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:35,589 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:35,590 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:35,596 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 09:56:35,597 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:35,598 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:35,599 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:35,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:35,628 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:35,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:35,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:35,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:35,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:35,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:35,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:35,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:35,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:35,649 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 [2021-10-24 09:56:35,649 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 09:56:35,661 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 09:56:35,662 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:35,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:35,667 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,670 INFO L180 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size [2021-10-24 09:56:35,672 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-10-24 09:56:35,672 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 09:56:35,673 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:786, output treesize:130 [2021-10-24 09:56:35,682 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,686 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-10-24 09:56:35,691 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,695 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-10-24 09:56:35,703 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,708 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 200 [2021-10-24 09:56:35,713 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-10-24 09:56:35,723 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,728 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 234 [2021-10-24 09:56:35,733 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,738 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 225 [2021-10-24 09:56:35,743 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,749 INFO L185 QuantifierPusher]: treesize reduction 18, result has 92.6 percent of original size 224 [2021-10-24 09:56:35,755 INFO L180 QuantifierPusher]: treesize reduction 20, result has 92.7 percent of original size [2021-10-24 09:56:35,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 224 [2021-10-24 09:56:35,765 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-10-24 09:56:35,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:35,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:35,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:35,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:35,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:35,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:35,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:35,819 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-10-24 09:56:35,829 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,834 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 220 [2021-10-24 09:56:35,838 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,843 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-10-24 09:56:35,848 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,852 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 226 [2021-10-24 09:56:35,857 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,862 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-10-24 09:56:35,867 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,872 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 252 [2021-10-24 09:56:35,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:35,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:35,899 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:35,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:35,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:35,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:35,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:35,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:35,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:35,931 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.5 percent of original size [2021-10-24 09:56:35,935 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-24 09:56:35,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-24 09:56:35,943 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-10-24 09:56:35,953 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-10-24 09:56:35,960 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,964 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-10-24 09:56:35,967 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-24 09:56:35,979 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.5 percent of original size [2021-10-24 09:56:35,983 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-24 09:56:35,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:35,992 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-24 09:56:35,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,076 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:36,081 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-10-24 09:56:36,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,172 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.0 percent of original size [2021-10-24 09:56:36,175 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-24 09:56:36,180 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:36,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-24 09:56:36,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:36,256 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:36,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-24 09:56:36,297 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:36,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-24 09:56:36,572 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:36,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-10-24 09:56:36,676 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 09:56:51,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:56:51,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 09:56:51,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-24 09:56:51,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235259808] [2021-10-24 09:56:51,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-24 09:56:51,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:56:51,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-24 09:56:51,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2021-10-24 09:56:52,000 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:56,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:56:56,619 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2021-10-24 09:56:56,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-24 09:56:56,620 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 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 30 [2021-10-24 09:56:56,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:56:56,621 INFO L225 Difference]: With dead ends: 134 [2021-10-24 09:56:56,621 INFO L226 Difference]: Without dead ends: 132 [2021-10-24 09:56:56,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 16579.1ms TimeCoverageRelationStatistics Valid=196, Invalid=1210, Unknown=0, NotChecked=0, Total=1406 [2021-10-24 09:56:56,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-24 09:56:56,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 98. [2021-10-24 09:56:56,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 92 states have (on average 1.1521739130434783) internal successors, (106), 97 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:56,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2021-10-24 09:56:56,638 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 30 [2021-10-24 09:56:56,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:56:56,638 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2021-10-24 09:56:56,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:56,639 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2021-10-24 09:56:56,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-24 09:56:56,640 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:56:56,640 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2021-10-24 09:56:56,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-24 09:56:56,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:56:56,866 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-24 09:56:56,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:56:56,866 INFO L82 PathProgramCache]: Analyzing trace with hash -774379650, now seen corresponding path program 2 times [2021-10-24 09:56:56,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:56:56,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343108941] [2021-10-24 09:56:56,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:56,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:56:56,878 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 09:56:56,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557473316] [2021-10-24 09:56:56,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-24 09:56:56,891 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:56:56,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:56:56,892 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:56:56,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-24 09:56:57,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-24 09:56:57,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 09:56:57,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-24 09:56:57,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:56:57,633 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 09:56:57,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:56:57,920 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 09:56:57,920 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:56:57,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343108941] [2021-10-24 09:56:57,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:56:57,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557473316] [2021-10-24 09:56:57,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557473316] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:56:57,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1978461557] [2021-10-24 09:56:57,925 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-10-24 09:56:57,925 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 09:56:57,926 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 09:56:57,926 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 09:56:57,926 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 09:56:57,935 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:57,936 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:56:57,936 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:57,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 09:56:57,942 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 09:56:57,942 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:57,943 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 09:56:57,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-10-24 09:56:57,951 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_17|], 21=[|v_#valid_18|]} [2021-10-24 09:56:57,958 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 09:56:57,959 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:57,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:57,960 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:57,960 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:57,960 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:57,968 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 09:56:57,968 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:57,969 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:57,969 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:57,970 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:57,970 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:57,977 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 09:56:57,977 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:57,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:57,978 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:57,979 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:57,979 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:57,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:57,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:57,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:58,000 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 [2021-10-24 09:56:58,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:56:58,002 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 09:56:58,003 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:58,011 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 09:56:58,012 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,012 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:58,018 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 09:56:58,019 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:58,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,035 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:58,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:58,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:58,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:58,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:58,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:58,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:58,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:58,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:58,056 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 [2021-10-24 09:56:58,057 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,059 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 09:56:58,060 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,061 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 09:56:58,061 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-24 09:56:58,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,066 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,072 INFO L180 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size [2021-10-24 09:56:58,074 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-10-24 09:56:58,074 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 09:56:58,075 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:786, output treesize:130 [2021-10-24 09:56:58,085 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,091 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-10-24 09:56:58,096 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,101 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-10-24 09:56:58,112 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 200 [2021-10-24 09:56:58,124 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,131 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-10-24 09:56:58,137 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 234 [2021-10-24 09:56:58,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,164 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 225 [2021-10-24 09:56:58,169 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 242 [2021-10-24 09:56:58,182 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,188 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 244 [2021-10-24 09:56:58,194 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,200 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 268 [2021-10-24 09:56:58,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,247 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.5 percent of original size [2021-10-24 09:56:58,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-24 09:56:58,253 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-24 09:56:58,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-10-24 09:56:58,265 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-10-24 09:56:58,274 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,279 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-10-24 09:56:58,282 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-24 09:56:58,297 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.5 percent of original size [2021-10-24 09:56:58,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-24 09:56:58,307 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,310 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-24 09:56:58,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,406 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,411 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-10-24 09:56:58,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,491 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,504 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.0 percent of original size [2021-10-24 09:56:58,507 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-24 09:56:58,512 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:58,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-24 09:56:58,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:56:58,594 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 09:57:00,384 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:57:00,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 09:57:00,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2021-10-24 09:57:00,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031447572] [2021-10-24 09:57:00,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-24 09:57:00,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:57:00,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-24 09:57:00,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2021-10-24 09:57:00,387 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:00,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:57:00,777 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2021-10-24 09:57:00,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:57:00,778 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-24 09:57:00,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:57:00,779 INFO L225 Difference]: With dead ends: 98 [2021-10-24 09:57:00,779 INFO L226 Difference]: Without dead ends: 70 [2021-10-24 09:57:00,780 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2086.2ms TimeCoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2021-10-24 09:57:00,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-24 09:57:00,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-24 09:57:00,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 69 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:00,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2021-10-24 09:57:00,795 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 30 [2021-10-24 09:57:00,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:57:00,796 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2021-10-24 09:57:00,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:00,796 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2021-10-24 09:57:00,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-24 09:57:00,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:57:00,798 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:57:00,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-24 09:57:01,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable229 [2021-10-24 09:57:01,003 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-24 09:57:01,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:57:01,004 INFO L82 PathProgramCache]: Analyzing trace with hash -22951460, now seen corresponding path program 2 times [2021-10-24 09:57:01,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:57:01,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307461021] [2021-10-24 09:57:01,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:57:01,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:57:01,016 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 09:57:01,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [566002669] [2021-10-24 09:57:01,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-24 09:57:01,017 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:57:01,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:57:01,035 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:57:01,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-24 09:57:01,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-24 09:57:01,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 09:57:01,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-24 09:57:01,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:57:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-24 09:57:23,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:57:25,596 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-10-24 09:57:25,596 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:57:25,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307461021] [2021-10-24 09:57:25,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:57:25,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566002669] [2021-10-24 09:57:25,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566002669] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-24 09:57:25,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-24 09:57:25,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 24 [2021-10-24 09:57:25,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500230025] [2021-10-24 09:57:25,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-24 09:57:25,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:57:25,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-24 09:57:25,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=409, Unknown=8, NotChecked=0, Total=552 [2021-10-24 09:57:25,599 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:25,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:57:25,951 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2021-10-24 09:57:25,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 09:57:25,952 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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 50 [2021-10-24 09:57:25,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:57:25,953 INFO L225 Difference]: With dead ends: 70 [2021-10-24 09:57:25,953 INFO L226 Difference]: Without dead ends: 64 [2021-10-24 09:57:25,954 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 21197.7ms TimeCoverageRelationStatistics Valid=161, Invalid=481, Unknown=8, NotChecked=0, Total=650 [2021-10-24 09:57:25,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-24 09:57:25,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-24 09:57:25,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:25,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2021-10-24 09:57:25,969 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 50 [2021-10-24 09:57:25,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:57:25,970 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2021-10-24 09:57:25,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:25,970 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2021-10-24 09:57:25,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-24 09:57:25,973 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:57:25,973 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:57:26,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-24 09:57:26,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:57:26,186 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-24 09:57:26,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:57:26,186 INFO L82 PathProgramCache]: Analyzing trace with hash 346213938, now seen corresponding path program 2 times [2021-10-24 09:57:26,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:57:26,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79796699] [2021-10-24 09:57:26,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:57:26,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:57:26,206 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 09:57:26,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [347673391] [2021-10-24 09:57:26,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-24 09:57:26,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:57:26,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:57:26,212 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:57:26,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-24 09:57:26,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-24 09:57:26,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 09:57:26,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-24 09:57:26,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:57:39,696 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-10-24 09:57:39,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:57:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-10-24 09:57:41,522 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:57:41,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79796699] [2021-10-24 09:57:41,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:57:41,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347673391] [2021-10-24 09:57:41,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347673391] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:57:41,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:57:41,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 14] imperfect sequences [] total 25 [2021-10-24 09:57:41,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196017594] [2021-10-24 09:57:41,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-24 09:57:41,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:57:41,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-24 09:57:41,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2021-10-24 09:57:41,525 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:56,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:57:56,616 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2021-10-24 09:57:56,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-24 09:57:56,616 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 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 63 [2021-10-24 09:57:56,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:57:56,617 INFO L225 Difference]: With dead ends: 64 [2021-10-24 09:57:56,617 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 09:57:56,618 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 18346.4ms TimeCoverageRelationStatistics Valid=289, Invalid=640, Unknown=1, NotChecked=0, Total=930 [2021-10-24 09:57:56,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 09:57:56,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 09:57:56,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:56,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 09:57:56,619 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2021-10-24 09:57:56,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:57:56,619 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 09:57:56,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:56,620 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 09:57:56,620 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 09:57:56,623 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:57:56,623 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:57:56,623 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:57:56,623 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:57:56,623 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:57:56,623 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:57:56,624 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:57:56,624 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:57:56,624 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:57:56,624 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:57:56,624 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:57:56,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-24 09:57:56,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable288 [2021-10-24 09:57:56,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 09:57:56,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:57:56,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:57:56,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:57:56,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:57:56,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:57:56,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:57:56,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:57:56,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:57:56,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:57:56,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:57:56,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:57:57,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:57:58,430 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-24 09:57:58,430 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-24 09:57:58,430 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-24 09:57:58,431 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 09:57:58,431 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-24 09:57:58,431 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-24 09:57:58,431 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-24 09:57:58,431 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-24 09:57:58,431 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (and (<= ULTIMATE.start_main_~a~0 2) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0)))) (= (+ ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0 (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (+ (* 3 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~y~0 5 .cse0)) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 .cse0))) [2021-10-24 09:57:58,431 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-24 09:57:58,431 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (and (<= ULTIMATE.start_main_~a~0 2) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0)))) (= (+ ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0 (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (+ (* 3 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~y~0 5 .cse0)) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 .cse0))) [2021-10-24 09:57:58,431 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-10-24 09:57:58,432 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (and (<= ULTIMATE.start_main_~a~0 2) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0)))) (= (+ ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0 (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (+ (* 3 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~y~0 5 .cse0)) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 .cse0))) [2021-10-24 09:57:58,432 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-10-24 09:57:58,432 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (and (<= ULTIMATE.start_main_~a~0 2) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0)))) (= (+ ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0 (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (+ (* 3 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~y~0 5 .cse0)) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 .cse0))) [2021-10-24 09:57:58,432 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-10-24 09:57:58,432 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 39 40) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (and (<= ULTIMATE.start_main_~a~0 2) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0)))) (= (+ ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0 (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (+ (* 3 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~y~0 5 .cse0)) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 .cse0))) [2021-10-24 09:57:58,432 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-10-24 09:57:58,433 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (let ((.cse0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0 (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (+ (* 3 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~y~0 5 .cse0)) (= (+ (* 6 ULTIMATE.start_main_~a~0) (* 2 ULTIMATE.start_main_~y~0) 10) (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0) (* 2 ULTIMATE.start_main_~z~0))) .cse1 (= ULTIMATE.start_main_~x~0 .cse0))) (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse1 (= ULTIMATE.start_main_~n~0 0)))) [2021-10-24 09:57:58,433 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-10-24 09:57:58,433 INFO L853 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (and (= (+ ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0 (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (+ (* 3 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~y~0 5 .cse0)) (= (+ (* 6 ULTIMATE.start_main_~a~0) (* 2 ULTIMATE.start_main_~y~0) 10) (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0) (* 2 ULTIMATE.start_main_~z~0))) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 .cse0))) [2021-10-24 09:57:58,433 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-24 09:57:58,433 INFO L857 garLoopResultBuilder]: For program point L15-21(lines 15 18) no Hoare annotation was computed. [2021-10-24 09:57:58,434 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-24 09:57:58,434 INFO L853 garLoopResultBuilder]: At program point L15-23(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-10-24 09:57:58,434 INFO L857 garLoopResultBuilder]: For program point L15-24(lines 15 18) no Hoare annotation was computed. [2021-10-24 09:57:58,434 INFO L853 garLoopResultBuilder]: At program point L15-26(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and (= ULTIMATE.start_main_~x~0 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~z~0 6) .cse0) (and (= ULTIMATE.start_main_~y~0 7) (= (+ 6 (* 12 ULTIMATE.start_main_~y~0) (* 18 ULTIMATE.start_main_~x~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (* 2 ULTIMATE.start_main_~z~0))) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse0 (= ULTIMATE.start_main_~n~0 1)) (and (= (+ ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (+ 7 (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) (* 9 ULTIMATE.start_main_~n~0))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))))) [2021-10-24 09:57:58,435 INFO L857 garLoopResultBuilder]: For program point L15-27(lines 15 18) no Hoare annotation was computed. [2021-10-24 09:57:58,435 INFO L853 garLoopResultBuilder]: At program point L15-29(lines 14 20) the Hoare annotation is: (and (= (+ 6 (* 12 ULTIMATE.start_main_~y~0) (* 18 ULTIMATE.start_main_~x~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (* 2 ULTIMATE.start_main_~z~0))) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) [2021-10-24 09:57:58,435 INFO L857 garLoopResultBuilder]: For program point L15-30(lines 15 18) no Hoare annotation was computed. [2021-10-24 09:57:58,435 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-24 09:57:58,435 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-24 09:57:58,435 INFO L853 garLoopResultBuilder]: At program point L15-32(lines 14 20) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) [2021-10-24 09:57:58,436 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-10-24 09:57:58,436 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-10-24 09:57:58,436 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-10-24 09:57:58,436 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-10-24 09:57:58,436 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-10-24 09:57:58,436 INFO L857 garLoopResultBuilder]: For program point L16-7(lines 16 17) no Hoare annotation was computed. [2021-10-24 09:57:58,436 INFO L857 garLoopResultBuilder]: For program point L16-8(lines 16 17) no Hoare annotation was computed. [2021-10-24 09:57:58,436 INFO L857 garLoopResultBuilder]: For program point L16-9(lines 16 17) no Hoare annotation was computed. [2021-10-24 09:57:58,436 INFO L857 garLoopResultBuilder]: For program point L16-10(lines 16 17) no Hoare annotation was computed. [2021-10-24 09:57:58,436 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 09:57:58,436 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-24 09:57:58,436 INFO L853 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (let ((.cse4 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (let ((.cse0 (<= ULTIMATE.start_main_~a~0 2)) (.cse1 (<= 0 ULTIMATE.start_main_~a~0)) (.cse2 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) (.cse3 (= ULTIMATE.start_main_~x~0 .cse4))) (or (and .cse0 (= (+ (* 6 ULTIMATE.start_main_~a~0) (* 2 ULTIMATE.start_main_~y~0) 10) (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0) (* 2 ULTIMATE.start_main_~z~0))) .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~n~0 0)) (and .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0)))) (= (+ ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0 (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (+ (* 3 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~y~0 5 .cse4)) .cse1 .cse2 .cse3)))) [2021-10-24 09:57:58,437 INFO L857 garLoopResultBuilder]: For program point L33-3(lines 33 46) no Hoare annotation was computed. [2021-10-24 09:57:58,437 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-24 09:57:58,437 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-24 09:57:58,440 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:57:58,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:57:58 BoogieIcfgContainer [2021-10-24 09:57:58,468 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:57:58,469 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:57:58,469 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:57:58,469 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:57:58,470 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:56:07" (3/4) ... [2021-10-24 09:57:58,473 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 09:57:58,484 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-10-24 09:57:58,485 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-24 09:57:58,485 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 09:57:58,486 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 09:57:58,535 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:57:58,535 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:57:58,536 INFO L168 Benchmark]: Toolchain (without parser) took 112603.01 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 71.2 MB in the beginning and 66.2 MB in the end (delta: 5.0 MB). Peak memory consumption was 28.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:57:58,536 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 113.2 MB. Free memory is still 87.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:57:58,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 402.01 ms. Allocated memory is still 113.2 MB. Free memory was 71.0 MB in the beginning and 87.2 MB in the end (delta: -16.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:57:58,537 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.13 ms. Allocated memory is still 113.2 MB. Free memory was 87.2 MB in the beginning and 85.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:57:58,537 INFO L168 Benchmark]: Boogie Preprocessor took 55.44 ms. Allocated memory is still 113.2 MB. Free memory was 85.4 MB in the beginning and 84.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:57:58,537 INFO L168 Benchmark]: RCFGBuilder took 591.41 ms. Allocated memory is still 113.2 MB. Free memory was 84.1 MB in the beginning and 70.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 09:57:58,538 INFO L168 Benchmark]: TraceAbstraction took 111410.56 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 69.7 MB in the beginning and 69.4 MB in the end (delta: 328.7 kB). Peak memory consumption was 68.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:57:58,538 INFO L168 Benchmark]: Witness Printer took 66.33 ms. Allocated memory is still 136.3 MB. Free memory was 69.4 MB in the beginning and 66.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:57:58,539 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 113.2 MB. Free memory is still 87.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 402.01 ms. Allocated memory is still 113.2 MB. Free memory was 71.0 MB in the beginning and 87.2 MB in the end (delta: -16.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.13 ms. Allocated memory is still 113.2 MB. Free memory was 87.2 MB in the beginning and 85.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.44 ms. Allocated memory is still 113.2 MB. Free memory was 85.4 MB in the beginning and 84.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 591.41 ms. Allocated memory is still 113.2 MB. Free memory was 84.1 MB in the beginning and 70.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 111410.56 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 69.7 MB in the beginning and 69.4 MB in the end (delta: 328.7 kB). Peak memory consumption was 68.2 MB. Max. memory is 16.1 GB. * Witness Printer took 66.33 ms. Allocated memory is still 136.3 MB. Free memory was 69.4 MB in the beginning and 66.2 MB in the end (delta: 3.1 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 48 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 111297.3ms, OverallIterations: 11, TraceHistogramMax: 5, EmptinessCheckTime: 21.9ms, AutomataDifference: 22947.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1604.8ms, InitialAbstractionConstructionTime: 14.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 220 SDtfs, 767 SDslu, 541 SDs, 0 SdLazy, 938 SolverSat, 298 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 13374.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 670 GetRequests, 457 SyntacticMatches, 11 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 75700.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=8, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 158.7ms AutomataMinimizationTime, 11 MinimizatonAttempts, 140 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 12 LocationsWithAnnotation, 12 PreInvPairs, 61 NumberOfFragments, 677 HoareAnnotationTreeSize, 12 FomulaSimplifications, 5823 FormulaSimplificationTreeSizeReduction, 178.1ms HoareSimplificationTime, 12 FomulaSimplificationsInter, 2868 FormulaSimplificationTreeSizeReductionInter, 1418.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 81.0ms SsaConstructionTime, 674.1ms SatisfiabilityAnalysisTime, 42885.9ms InterpolantComputationTime, 265 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 505 ConstructedInterpolants, 36 QuantifiedInterpolants, 7033 SizeOfPredicates, 86 NumberOfNonLiveVariables, 923 ConjunctsInSsa, 198 ConjunctsInUnsatCore, 21 InterpolantComputations, 10 PerfectInterpolantSequences, 386/462 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 - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((1 == cond && z + x + 3 * (n * n) == 3 * n + y + 5 + n * n * n) && 6 * a + 2 * y + 10 == a * z + 2 * z) && z == 6 * n + 6) && x == n * n * n) || ((((x == 0 && y == 1) && !(0 == cond)) && z == 6 * n + 6) && n == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((z + x + 3 * (n * n) == 3 * n + y + 5 + n * n * n && 6 * a + 2 * y + 10 == a * z + 2 * z) && !(0 == cond)) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((a <= 2 && 1 == cond) && (n <= a || z * x == 6 * (a * x) + 12 * x)) && z + x + 3 * (n * n) == 3 * n + y + 5 + n * n * n) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((a <= 2 && 1 == cond) && (n <= a || z * x == 6 * (a * x) + 12 * x)) && z + x + 3 * (n * n) == 3 * n + y + 5 + n * n * n) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !(0 == cond) && z == 6 * n + 6 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((a <= 2 && 1 == cond) && (n <= a || z * x == 6 * (a * x) + 12 * x)) && z + x + 3 * (n * n) == 3 * n + y + 5 + n * n * n) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((x == 0 && 1 <= cond) && y == 1) && z == 6) && z == 6 * n + 6) || ((((y == 7 && 6 + 12 * y + 18 * x == z * y + 2 * z) && !(0 == cond)) && z == 6 * n + 6) && n == 1)) || (((z + y == 7 + 3 * (n * n) + 9 * n && 1 == cond) && z == 6 * n + 6) && x == n * n * n) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((y == 3 * n + 3 * (n * n) + 1 && !(0 == cond)) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((a <= 2 && 1 == cond) && (n <= a || z * x == 6 * (a * x) + 12 * x)) && z + x + 3 * (n * n) == 3 * n + y + 5 + n * n * n) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (((((a <= 2 && 6 * a + 2 * y + 10 == a * z + 2 * z) && 0 <= a) && z == 6 * n + 6) && x == n * n * n) && n == 0) || ((((((a <= 2 && 1 == cond) && (n <= a || z * x == 6 * (a * x) + 12 * x)) && z + x + 3 * (n * n) == 3 * n + y + 5 + n * n * n) && 0 <= a) && z == 6 * n + 6) && x == n * n * n) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((a <= 2 && 1 == cond) && (n <= a || z * x == 6 * (a * x) + 12 * x)) && z + x + 3 * (n * n) == 3 * n + y + 5 + n * n * n) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (6 + 12 * y + 18 * x == z * y + 2 * z && !(0 == cond)) && z == 6 * n + 6 RESULT: Ultimate proved your program to be correct! [2021-10-24 09:57:58,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_859cac5e-71dc-4b49-877d-59d41f131c98/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...