./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh --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 bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 11:40:49,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:40:49,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:40:49,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:40:49,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:40:49,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:40:49,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:40:49,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:40:49,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:40:49,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:40:49,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:40:49,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:40:49,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:40:49,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:40:49,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:40:49,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:40:49,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:40:49,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:40:49,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:40:49,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:40:49,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:40:49,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:40:49,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:40:49,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:40:49,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:40:49,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:40:49,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:40:49,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:40:49,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:40:49,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:40:49,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:40:49,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:40:49,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:40:49,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:40:49,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:40:49,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:40:49,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:40:49,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:40:49,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:40:49,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:40:49,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:40:49,283 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 11:40:49,306 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:40:49,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:40:49,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:40:49,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:40:49,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:40:49,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:40:49,308 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:40:49,309 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:40:49,309 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:40:49,309 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:40:49,309 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:40:49,309 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:40:49,309 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:40:49,310 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:40:49,310 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:40:49,310 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:40:49,310 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:40:49,310 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:40:49,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:40:49,311 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:40:49,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:40:49,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:40:49,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:40:49,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:40:49,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:40:49,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:40:49,312 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:40:49,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:40:49,312 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:40:49,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:40:49,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:40:49,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:40:49,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:40:49,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:40:49,313 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:40:49,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:40:49,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:40:49,314 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:40:49,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:40:49,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:40:49,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:40:49,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e [2022-12-14 11:40:49,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:40:49,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:40:49,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:40:49,513 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:40:49,514 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:40:49,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2022-12-14 11:40:52,069 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:40:52,191 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:40:52,191 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2022-12-14 11:40:52,195 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/data/09d225ea3/547bf44d973c45828f1002f747d0f213/FLAGe971cbc82 [2022-12-14 11:40:52,206 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/data/09d225ea3/547bf44d973c45828f1002f747d0f213 [2022-12-14 11:40:52,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:40:52,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:40:52,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:40:52,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:40:52,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:40:52,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:40:52" (1/1) ... [2022-12-14 11:40:52,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e62677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:52, skipping insertion in model container [2022-12-14 11:40:52,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:40:52" (1/1) ... [2022-12-14 11:40:52,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:40:52,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:40:52,345 WARN L237 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_bd1af888-706c-423e-b246-805d622abab1/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2022-12-14 11:40:52,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:40:52,369 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:40:52,381 WARN L237 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_bd1af888-706c-423e-b246-805d622abab1/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2022-12-14 11:40:52,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:40:52,403 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:40:52,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:52 WrapperNode [2022-12-14 11:40:52,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:40:52,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:40:52,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:40:52,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:40:52,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:52" (1/1) ... [2022-12-14 11:40:52,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:52" (1/1) ... [2022-12-14 11:40:52,436 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2022-12-14 11:40:52,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:40:52,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:40:52,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:40:52,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:40:52,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:52" (1/1) ... [2022-12-14 11:40:52,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:52" (1/1) ... [2022-12-14 11:40:52,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:52" (1/1) ... [2022-12-14 11:40:52,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:52" (1/1) ... [2022-12-14 11:40:52,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:52" (1/1) ... [2022-12-14 11:40:52,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:52" (1/1) ... [2022-12-14 11:40:52,456 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:52" (1/1) ... [2022-12-14 11:40:52,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:52" (1/1) ... [2022-12-14 11:40:52,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:40:52,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:40:52,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:40:52,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:40:52,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:52" (1/1) ... [2022-12-14 11:40:52,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:40:52,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:40:52,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:40:52,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:40:52,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:40:52,521 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 11:40:52,521 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 11:40:52,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:40:52,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:40:52,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:40:52,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 11:40:52,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 11:40:52,585 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:40:52,587 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:40:52,701 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:40:52,717 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:40:52,717 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-14 11:40:52,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:52 BoogieIcfgContainer [2022-12-14 11:40:52,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:40:52,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:40:52,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:40:52,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:40:52,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:40:52" (1/3) ... [2022-12-14 11:40:52,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1d13f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:40:52, skipping insertion in model container [2022-12-14 11:40:52,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:52" (2/3) ... [2022-12-14 11:40:52,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1d13f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:40:52, skipping insertion in model container [2022-12-14 11:40:52,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:52" (3/3) ... [2022-12-14 11:40:52,726 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2022-12-14 11:40:52,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:40:52,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:40:52,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:40:52,781 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53747231, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:40:52,782 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:40:52,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 11:40:52,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 11:40:52,790 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:52,791 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:40:52,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:40:52,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:52,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1539547475, now seen corresponding path program 1 times [2022-12-14 11:40:52,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:40:52,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317982623] [2022-12-14 11:40:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:52,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:40:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:52,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:40:52,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317982623] [2022-12-14 11:40:52,903 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-14 11:40:52,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530816284] [2022-12-14 11:40:52,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:52,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:52,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:40:52,905 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:40:52,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:40:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:52,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 11:40:52,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:40:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 11:40:53,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:40:53,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530816284] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:40:53,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:40:53,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:40:53,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753471085] [2022-12-14 11:40:53,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:40:53,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 11:40:53,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:40:53,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 11:40:53,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:40:53,032 INFO L87 Difference]: Start difference. First operand has 30 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:40:53,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:40:53,057 INFO L93 Difference]: Finished difference Result 51 states and 79 transitions. [2022-12-14 11:40:53,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 11:40:53,059 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 20 [2022-12-14 11:40:53,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:40:53,065 INFO L225 Difference]: With dead ends: 51 [2022-12-14 11:40:53,065 INFO L226 Difference]: Without dead ends: 28 [2022-12-14 11:40:53,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:40:53,069 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:40:53,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:40:53,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-14 11:40:53,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-12-14 11:40:53,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 11:40:53,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2022-12-14 11:40:53,100 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 20 [2022-12-14 11:40:53,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:40:53,101 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2022-12-14 11:40:53,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:40:53,102 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2022-12-14 11:40:53,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 11:40:53,102 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:53,102 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:40:53,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:40:53,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:53,305 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:40:53,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:53,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1863391506, now seen corresponding path program 1 times [2022-12-14 11:40:53,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:40:53,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417194839] [2022-12-14 11:40:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:53,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:40:53,363 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:40:53,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [32292948] [2022-12-14 11:40:53,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:53,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:53,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:40:53,368 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:40:53,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:40:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:53,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 11:40:53,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:40:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 11:40:53,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:40:53,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:40:53,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417194839] [2022-12-14 11:40:53,552 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:40:53,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32292948] [2022-12-14 11:40:53,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32292948] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:40:53,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:40:53,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 11:40:53,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476497700] [2022-12-14 11:40:53,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:40:53,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:40:53,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:40:53,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:40:53,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:40:53,553 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:40:53,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:40:53,627 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2022-12-14 11:40:53,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:40:53,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 21 [2022-12-14 11:40:53,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:40:53,628 INFO L225 Difference]: With dead ends: 47 [2022-12-14 11:40:53,628 INFO L226 Difference]: Without dead ends: 40 [2022-12-14 11:40:53,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:40:53,630 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 30 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:40:53,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 78 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:40:53,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-14 11:40:53,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 30. [2022-12-14 11:40:53,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 11:40:53,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2022-12-14 11:40:53,636 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 21 [2022-12-14 11:40:53,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:40:53,636 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2022-12-14 11:40:53,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:40:53,636 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2022-12-14 11:40:53,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 11:40:53,637 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:53,637 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:40:53,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:40:53,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:53,839 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:40:53,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:53,841 INFO L85 PathProgramCache]: Analyzing trace with hash -73319670, now seen corresponding path program 1 times [2022-12-14 11:40:53,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:40:53,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891218426] [2022-12-14 11:40:53,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:53,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:40:53,890 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:40:53,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484265448] [2022-12-14 11:40:53,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:53,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:53,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:40:53,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:40:53,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:40:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:53,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 11:40:53,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:40:54,217 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 11:40:54,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:40:54,369 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 11:40:54,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:40:54,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891218426] [2022-12-14 11:40:54,369 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:40:54,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484265448] [2022-12-14 11:40:54,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484265448] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 11:40:54,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:40:54,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-12-14 11:40:54,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590090721] [2022-12-14 11:40:54,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:40:54,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 11:40:54,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:40:54,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 11:40:54,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-12-14 11:40:54,372 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:40:54,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:40:54,457 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2022-12-14 11:40:54,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 11:40:54,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2022-12-14 11:40:54,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:40:54,459 INFO L225 Difference]: With dead ends: 46 [2022-12-14 11:40:54,459 INFO L226 Difference]: Without dead ends: 44 [2022-12-14 11:40:54,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-12-14 11:40:54,460 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 13 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:40:54,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 144 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:40:54,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-14 11:40:54,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2022-12-14 11:40:54,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 11:40:54,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2022-12-14 11:40:54,468 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 24 [2022-12-14 11:40:54,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:40:54,469 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2022-12-14 11:40:54,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:40:54,469 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2022-12-14 11:40:54,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 11:40:54,470 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:54,470 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:40:54,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 11:40:54,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:54,672 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:40:54,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:54,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1101454984, now seen corresponding path program 1 times [2022-12-14 11:40:54,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:40:54,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448509767] [2022-12-14 11:40:54,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:54,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:40:54,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:40:54,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590682952] [2022-12-14 11:40:54,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:54,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:54,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:40:54,722 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:40:54,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 11:40:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:54,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 11:40:54,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:40:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 11:40:54,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:40:54,955 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 11:40:54,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:40:54,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448509767] [2022-12-14 11:40:54,956 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:40:54,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590682952] [2022-12-14 11:40:54,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590682952] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:40:54,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [929932814] [2022-12-14 11:40:54,971 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-12-14 11:40:54,971 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:40:54,974 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:40:54,978 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:40:54,979 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:40:55,548 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-12-14 11:40:55,564 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:40:56,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [929932814] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:40:56,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:40:56,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [7, 7] total 18 [2022-12-14 11:40:56,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449402475] [2022-12-14 11:40:56,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:40:56,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 11:40:56,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:40:56,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 11:40:56,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-12-14 11:40:56,844 INFO L87 Difference]: Start difference. First operand 43 states and 57 transitions. Second operand has 13 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:40:57,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:40:57,070 INFO L93 Difference]: Finished difference Result 71 states and 97 transitions. [2022-12-14 11:40:57,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 11:40:57,071 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2022-12-14 11:40:57,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:40:57,072 INFO L225 Difference]: With dead ends: 71 [2022-12-14 11:40:57,072 INFO L226 Difference]: Without dead ends: 64 [2022-12-14 11:40:57,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-12-14 11:40:57,073 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 41 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:40:57,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 48 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:40:57,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-12-14 11:40:57,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 50. [2022-12-14 11:40:57,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 34 states have internal predecessors, (41), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 11:40:57,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2022-12-14 11:40:57,097 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 26 [2022-12-14 11:40:57,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:40:57,097 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2022-12-14 11:40:57,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:40:57,097 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2022-12-14 11:40:57,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 11:40:57,098 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:57,098 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:40:57,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 11:40:57,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:57,299 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:40:57,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:57,300 INFO L85 PathProgramCache]: Analyzing trace with hash -156943002, now seen corresponding path program 1 times [2022-12-14 11:40:57,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:40:57,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828651350] [2022-12-14 11:40:57,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:57,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:40:57,310 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:40:57,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639158965] [2022-12-14 11:40:57,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:57,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:57,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:40:57,312 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:40:57,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 11:40:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:57,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-14 11:40:57,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:40:57,568 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 11:40:57,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:40:58,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:40:58,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828651350] [2022-12-14 11:40:58,637 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:40:58,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639158965] [2022-12-14 11:40:58,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639158965] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:40:58,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2024678320] [2022-12-14 11:40:58,639 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-12-14 11:40:58,639 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:40:58,639 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:40:58,639 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:40:58,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:40:58,885 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-12-14 11:40:58,893 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-12-14 11:40:58,904 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:40:59,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2024678320] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:40:59,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:40:59,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [13] total 26 [2022-12-14 11:40:59,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720466022] [2022-12-14 11:40:59,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:40:59,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 11:40:59,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:40:59,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 11:40:59,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2022-12-14 11:40:59,819 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 15 states, 10 states have (on average 1.4) internal successors, (14), 8 states have internal predecessors, (14), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 11:41:00,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:00,098 INFO L93 Difference]: Finished difference Result 72 states and 97 transitions. [2022-12-14 11:41:00,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 11:41:00,099 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 10 states have (on average 1.4) internal successors, (14), 8 states have internal predecessors, (14), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 29 [2022-12-14 11:41:00,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:00,100 INFO L225 Difference]: With dead ends: 72 [2022-12-14 11:41:00,100 INFO L226 Difference]: Without dead ends: 70 [2022-12-14 11:41:00,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2022-12-14 11:41:00,101 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 71 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:00,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 58 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:41:00,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-12-14 11:41:00,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2022-12-14 11:41:00,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 41 states have internal predecessors, (48), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-12-14 11:41:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 89 transitions. [2022-12-14 11:41:00,120 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 89 transitions. Word has length 29 [2022-12-14 11:41:00,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:00,120 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 89 transitions. [2022-12-14 11:41:00,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 10 states have (on average 1.4) internal successors, (14), 8 states have internal predecessors, (14), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 11:41:00,121 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 89 transitions. [2022-12-14 11:41:00,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 11:41:00,121 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:00,121 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:00,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-14 11:41:00,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:41:00,322 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:41:00,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:00,324 INFO L85 PathProgramCache]: Analyzing trace with hash 187338980, now seen corresponding path program 1 times [2022-12-14 11:41:00,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:41:00,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788254967] [2022-12-14 11:41:00,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:00,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:41:00,354 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:41:00,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031752606] [2022-12-14 11:41:00,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:00,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:41:00,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:41:00,357 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:41:00,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 11:41:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:00,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 11:41:00,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 11:41:00,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:41:00,594 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 11:41:00,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:41:00,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788254967] [2022-12-14 11:41:00,594 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:41:00,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031752606] [2022-12-14 11:41:00,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031752606] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:41:00,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1397300220] [2022-12-14 11:41:00,597 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-12-14 11:41:00,597 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:41:00,597 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:41:00,597 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:41:00,598 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:41:01,202 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-12-14 11:41:01,208 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-12-14 11:41:01,222 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:41:02,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1397300220] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:41:02,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:41:02,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [8, 6] total 26 [2022-12-14 11:41:02,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052572902] [2022-12-14 11:41:02,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:41:02,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 11:41:02,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:41:02,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 11:41:02,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2022-12-14 11:41:02,987 INFO L87 Difference]: Start difference. First operand 65 states and 89 transitions. Second operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 9 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:41:03,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:03,616 INFO L93 Difference]: Finished difference Result 115 states and 159 transitions. [2022-12-14 11:41:03,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 11:41:03,617 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 9 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 29 [2022-12-14 11:41:03,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:03,618 INFO L225 Difference]: With dead ends: 115 [2022-12-14 11:41:03,618 INFO L226 Difference]: Without dead ends: 113 [2022-12-14 11:41:03,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2022-12-14 11:41:03,620 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 93 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:03,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 64 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 11:41:03,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-12-14 11:41:03,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2022-12-14 11:41:03,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 63 states have (on average 1.253968253968254) internal successors, (79), 64 states have internal predecessors, (79), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-12-14 11:41:03,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 152 transitions. [2022-12-14 11:41:03,677 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 152 transitions. Word has length 29 [2022-12-14 11:41:03,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:03,677 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 152 transitions. [2022-12-14 11:41:03,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 9 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:41:03,678 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 152 transitions. [2022-12-14 11:41:03,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 11:41:03,679 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:03,679 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:03,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 11:41:03,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 11:41:03,881 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:41:03,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:03,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1193022788, now seen corresponding path program 1 times [2022-12-14 11:41:03,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:41:03,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063325809] [2022-12-14 11:41:03,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:03,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:41:03,918 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:41:03,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897056079] [2022-12-14 11:41:03,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:03,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:41:03,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:41:03,920 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:41:03,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 11:41:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:03,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 65 conjunts are in the unsatisfiable core [2022-12-14 11:41:03,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 11:41:04,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:41:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 11:41:05,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:41:05,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063325809] [2022-12-14 11:41:05,272 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:41:05,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897056079] [2022-12-14 11:41:05,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897056079] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:41:05,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2124041807] [2022-12-14 11:41:05,274 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-12-14 11:41:05,274 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:41:05,275 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:41:05,275 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:41:05,275 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:41:12,326 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-12-14 11:41:12,329 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-12-14 11:41:12,337 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:41:19,731 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2235#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:41:19,732 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:41:19,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:41:19,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 26 [2022-12-14 11:41:19,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003815171] [2022-12-14 11:41:19,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:41:19,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-14 11:41:19,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:41:19,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-14 11:41:19,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1844, Unknown=0, NotChecked=0, Total=2070 [2022-12-14 11:41:19,735 INFO L87 Difference]: Start difference. First operand 108 states and 152 transitions. Second operand has 26 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-12-14 11:41:24,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:24,017 INFO L93 Difference]: Finished difference Result 243 states and 346 transitions. [2022-12-14 11:41:24,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-14 11:41:24,018 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 51 [2022-12-14 11:41:24,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:24,021 INFO L225 Difference]: With dead ends: 243 [2022-12-14 11:41:24,021 INFO L226 Difference]: Without dead ends: 181 [2022-12-14 11:41:24,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 101 SyntacticMatches, 6 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1666 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=615, Invalid=4077, Unknown=0, NotChecked=0, Total=4692 [2022-12-14 11:41:24,024 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 130 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:24,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 155 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 11:41:24,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-12-14 11:41:24,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 136. [2022-12-14 11:41:24,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 87 states have (on average 1.2413793103448276) internal successors, (108), 88 states have internal predecessors, (108), 41 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-12-14 11:41:24,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 189 transitions. [2022-12-14 11:41:24,098 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 189 transitions. Word has length 51 [2022-12-14 11:41:24,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:24,099 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 189 transitions. [2022-12-14 11:41:24,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-12-14 11:41:24,099 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 189 transitions. [2022-12-14 11:41:24,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-14 11:41:24,101 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:24,101 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:24,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 11:41:24,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:41:24,302 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:41:24,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:24,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1047855047, now seen corresponding path program 1 times [2022-12-14 11:41:24,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:41:24,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544319414] [2022-12-14 11:41:24,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:24,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:41:24,341 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:41:24,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730319541] [2022-12-14 11:41:24,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:24,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:41:24,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:41:24,344 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:41:24,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 11:41:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:24,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-14 11:41:24,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 24 proven. 17 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-12-14 11:41:24,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:41:24,677 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-12-14 11:41:24,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:41:24,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544319414] [2022-12-14 11:41:24,677 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:41:24,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730319541] [2022-12-14 11:41:24,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730319541] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:41:24,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [885486957] [2022-12-14 11:41:24,680 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-12-14 11:41:24,680 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:41:24,680 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:41:24,680 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:41:24,681 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:41:28,677 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2022-12-14 11:41:28,701 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-12-14 11:41:28,710 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:41:30,443 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3270#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:41:30,443 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:41:30,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:41:30,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 17 [2022-12-14 11:41:30,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614693960] [2022-12-14 11:41:30,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:41:30,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 11:41:30,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:41:30,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 11:41:30,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 11:41:30,445 INFO L87 Difference]: Start difference. First operand 136 states and 189 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 5 states have call successors, (22) [2022-12-14 11:41:30,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:30,918 INFO L93 Difference]: Finished difference Result 237 states and 318 transitions. [2022-12-14 11:41:30,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 11:41:30,919 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 5 states have call successors, (22) Word has length 61 [2022-12-14 11:41:30,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:30,920 INFO L225 Difference]: With dead ends: 237 [2022-12-14 11:41:30,920 INFO L226 Difference]: Without dead ends: 164 [2022-12-14 11:41:30,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 145 SyntacticMatches, 9 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=241, Invalid=1481, Unknown=0, NotChecked=0, Total=1722 [2022-12-14 11:41:30,921 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 61 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:30,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 160 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:41:30,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-12-14 11:41:30,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 154. [2022-12-14 11:41:30,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 98 states have (on average 1.2040816326530612) internal successors, (118), 99 states have internal predecessors, (118), 45 states have call successors, (45), 10 states have call predecessors, (45), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-12-14 11:41:30,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 207 transitions. [2022-12-14 11:41:30,991 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 207 transitions. Word has length 61 [2022-12-14 11:41:30,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:30,991 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 207 transitions. [2022-12-14 11:41:30,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 5 states have call successors, (22) [2022-12-14 11:41:30,991 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 207 transitions. [2022-12-14 11:41:30,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-14 11:41:30,992 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:30,993 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:30,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 11:41:31,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:41:31,194 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:41:31,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:31,195 INFO L85 PathProgramCache]: Analyzing trace with hash -94425734, now seen corresponding path program 1 times [2022-12-14 11:41:31,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:41:31,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94543696] [2022-12-14 11:41:31,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:31,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:41:31,224 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:41:31,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [425729504] [2022-12-14 11:41:31,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:31,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:41:31,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:41:31,227 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:41:31,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 11:41:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:31,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 11:41:31,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:31,376 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 11:41:31,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:41:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 11:41:31,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:41:31,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94543696] [2022-12-14 11:41:31,453 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:41:31,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425729504] [2022-12-14 11:41:31,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425729504] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:41:31,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [704675498] [2022-12-14 11:41:31,455 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-12-14 11:41:31,455 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:41:31,455 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:41:31,455 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:41:31,455 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:41:38,096 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-12-14 11:41:38,099 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-12-14 11:41:38,108 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:41:39,721 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4264#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:41:39,721 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:41:39,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:41:39,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-12-14 11:41:39,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134137819] [2022-12-14 11:41:39,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:41:39,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 11:41:39,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:41:39,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 11:41:39,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 11:41:39,723 INFO L87 Difference]: Start difference. First operand 154 states and 207 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-12-14 11:41:40,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:40,051 INFO L93 Difference]: Finished difference Result 207 states and 279 transitions. [2022-12-14 11:41:40,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 11:41:40,051 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 59 [2022-12-14 11:41:40,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:40,053 INFO L225 Difference]: With dead ends: 207 [2022-12-14 11:41:40,053 INFO L226 Difference]: Without dead ends: 141 [2022-12-14 11:41:40,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=202, Invalid=1358, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 11:41:40,054 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 68 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:40,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 178 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:41:40,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-12-14 11:41:40,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 122. [2022-12-14 11:41:40,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 74 states have (on average 1.1216216216216217) internal successors, (83), 75 states have internal predecessors, (83), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-12-14 11:41:40,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 156 transitions. [2022-12-14 11:41:40,114 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 156 transitions. Word has length 59 [2022-12-14 11:41:40,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:40,115 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 156 transitions. [2022-12-14 11:41:40,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-12-14 11:41:40,115 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 156 transitions. [2022-12-14 11:41:40,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 11:41:40,116 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:40,117 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:40,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 11:41:40,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-14 11:41:40,318 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:41:40,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:40,320 INFO L85 PathProgramCache]: Analyzing trace with hash 148795157, now seen corresponding path program 1 times [2022-12-14 11:41:40,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:41:40,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388385747] [2022-12-14 11:41:40,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:40,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:41:40,358 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:41:40,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1162486789] [2022-12-14 11:41:40,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:40,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:41:40,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:41:40,360 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:41:40,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 11:41:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:40,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 11:41:40,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 23 proven. 22 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-14 11:41:40,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:41:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 23 proven. 22 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-14 11:41:40,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:41:40,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388385747] [2022-12-14 11:41:40,511 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:41:40,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162486789] [2022-12-14 11:41:40,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162486789] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:41:40,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1010677451] [2022-12-14 11:41:40,513 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-12-14 11:41:40,513 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:41:40,514 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:41:40,514 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:41:40,514 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:41:45,383 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-12-14 11:41:45,418 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-12-14 11:41:45,429 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:41:46,661 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5261#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:41:46,661 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:41:46,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:41:46,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2022-12-14 11:41:46,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61087234] [2022-12-14 11:41:46,661 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:41:46,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 11:41:46,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:41:46,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 11:41:46,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2022-12-14 11:41:46,662 INFO L87 Difference]: Start difference. First operand 122 states and 156 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 11:41:46,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:46,774 INFO L93 Difference]: Finished difference Result 132 states and 164 transitions. [2022-12-14 11:41:46,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:41:46,775 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2022-12-14 11:41:46,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:46,775 INFO L225 Difference]: With dead ends: 132 [2022-12-14 11:41:46,775 INFO L226 Difference]: Without dead ends: 130 [2022-12-14 11:41:46,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 186 SyntacticMatches, 17 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-12-14 11:41:46,776 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 16 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:46,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 142 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:41:46,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-12-14 11:41:46,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-12-14 11:41:46,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 80 states have (on average 1.1125) internal successors, (89), 81 states have internal predecessors, (89), 37 states have call successors, (37), 12 states have call predecessors, (37), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-12-14 11:41:46,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 162 transitions. [2022-12-14 11:41:46,830 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 162 transitions. Word has length 76 [2022-12-14 11:41:46,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:46,830 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 162 transitions. [2022-12-14 11:41:46,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 11:41:46,830 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 162 transitions. [2022-12-14 11:41:46,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 11:41:46,831 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:46,831 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:46,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 11:41:47,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 11:41:47,033 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:41:47,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:47,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1021259487, now seen corresponding path program 2 times [2022-12-14 11:41:47,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:41:47,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169785171] [2022-12-14 11:41:47,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:47,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:41:47,060 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:41:47,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384638680] [2022-12-14 11:41:47,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:41:47,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:41:47,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:41:47,064 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:41:47,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 11:41:47,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 11:41:47,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:41:47,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 11:41:47,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-12-14 11:41:47,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:41:47,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:41:47,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169785171] [2022-12-14 11:41:47,273 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:41:47,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384638680] [2022-12-14 11:41:47,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384638680] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:41:47,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [554283323] [2022-12-14 11:41:47,274 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-12-14 11:41:47,274 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:41:47,274 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:41:47,275 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:41:47,275 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:41:51,591 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-12-14 11:41:51,625 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-12-14 11:41:51,636 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:41:53,445 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5957#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:41:53,445 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:41:53,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:41:53,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2022-12-14 11:41:53,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615396690] [2022-12-14 11:41:53,445 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-14 11:41:53,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:41:53,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:41:53,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:41:53,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2022-12-14 11:41:53,446 INFO L87 Difference]: Start difference. First operand 130 states and 162 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 11:41:53,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:53,592 INFO L93 Difference]: Finished difference Result 170 states and 209 transitions. [2022-12-14 11:41:53,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:41:53,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2022-12-14 11:41:53,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:53,593 INFO L225 Difference]: With dead ends: 170 [2022-12-14 11:41:53,593 INFO L226 Difference]: Without dead ends: 168 [2022-12-14 11:41:53,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 125 SyntacticMatches, 17 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2022-12-14 11:41:53,594 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 10 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:53,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 178 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:41:53,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-12-14 11:41:53,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 149. [2022-12-14 11:41:53,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 95 states have (on average 1.105263157894737) internal successors, (105), 97 states have internal predecessors, (105), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-12-14 11:41:53,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 180 transitions. [2022-12-14 11:41:53,653 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 180 transitions. Word has length 76 [2022-12-14 11:41:53,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:53,653 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 180 transitions. [2022-12-14 11:41:53,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 11:41:53,653 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 180 transitions. [2022-12-14 11:41:53,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 11:41:53,654 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:53,654 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:53,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-14 11:41:53,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:41:53,856 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:41:53,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:53,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1897496259, now seen corresponding path program 1 times [2022-12-14 11:41:53,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:41:53,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005140306] [2022-12-14 11:41:53,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:53,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:41:53,878 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:41:53,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377058284] [2022-12-14 11:41:53,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:53,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:41:53,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:41:53,879 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:41:53,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 11:41:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:53,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 82 conjunts are in the unsatisfiable core [2022-12-14 11:41:53,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 32 proven. 27 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-12-14 11:41:54,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:42:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 30 proven. 26 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-12-14 11:42:01,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:42:01,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005140306] [2022-12-14 11:42:01,347 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:42:01,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377058284] [2022-12-14 11:42:01,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377058284] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:42:01,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [311133243] [2022-12-14 11:42:01,348 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-12-14 11:42:01,348 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:42:01,348 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:42:01,348 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:42:01,348 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:42:05,831 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-12-14 11:42:05,834 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-12-14 11:42:05,842 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:42:25,020 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6947#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:42:25,020 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:42:25,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:42:25,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 32 [2022-12-14 11:42:25,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331401054] [2022-12-14 11:42:25,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:42:25,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 11:42:25,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:42:25,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 11:42:25,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=2104, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 11:42:25,021 INFO L87 Difference]: Start difference. First operand 149 states and 180 transitions. Second operand has 32 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 30 states have internal predecessors, (57), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2022-12-14 11:42:35,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 11:42:55,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 11:42:57,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 11:43:11,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 11:43:13,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 11:43:16,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 11:43:20,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:43:20,242 INFO L93 Difference]: Finished difference Result 275 states and 370 transitions. [2022-12-14 11:43:20,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-12-14 11:43:20,243 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 30 states have internal predecessors, (57), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 78 [2022-12-14 11:43:20,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:43:20,245 INFO L225 Difference]: With dead ends: 275 [2022-12-14 11:43:20,245 INFO L226 Difference]: Without dead ends: 271 [2022-12-14 11:43:20,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 166 SyntacticMatches, 19 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4569 ImplicationChecksByTransitivity, 50.5s TimeCoverageRelationStatistics Valid=1549, Invalid=9581, Unknown=0, NotChecked=0, Total=11130 [2022-12-14 11:43:20,249 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 542 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 776 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 2908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 776 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:43:20,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 307 Invalid, 2908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [776 Valid, 2127 Invalid, 5 Unknown, 0 Unchecked, 27.2s Time] [2022-12-14 11:43:20,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-12-14 11:43:20,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 231. [2022-12-14 11:43:20,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 146 states have (on average 1.1369863013698631) internal successors, (166), 148 states have internal predecessors, (166), 66 states have call successors, (66), 18 states have call predecessors, (66), 18 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-12-14 11:43:20,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 297 transitions. [2022-12-14 11:43:20,414 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 297 transitions. Word has length 78 [2022-12-14 11:43:20,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:43:20,414 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 297 transitions. [2022-12-14 11:43:20,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 30 states have internal predecessors, (57), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2022-12-14 11:43:20,414 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 297 transitions. [2022-12-14 11:43:20,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 11:43:20,415 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:43:20,415 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:43:20,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-14 11:43:20,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:43:20,616 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:43:20,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:43:20,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1729932497, now seen corresponding path program 1 times [2022-12-14 11:43:20,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:43:20,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665627036] [2022-12-14 11:43:20,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:43:20,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:43:20,641 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:43:20,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [940048252] [2022-12-14 11:43:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:43:20,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:43:20,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:43:20,645 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:43:20,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 11:43:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:43:20,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 11:43:20,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:43:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 90 proven. 9 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-12-14 11:43:20,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:43:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 28 proven. 11 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-12-14 11:43:20,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:43:20,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665627036] [2022-12-14 11:43:20,931 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:43:20,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940048252] [2022-12-14 11:43:20,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940048252] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:43:20,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [36047998] [2022-12-14 11:43:20,933 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-12-14 11:43:20,933 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:43:20,933 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:43:20,934 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:43:20,934 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:43:22,338 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2022-12-14 11:43:22,368 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-12-14 11:43:22,375 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:43:23,885 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8356#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2022-12-14 11:43:23,885 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:43:23,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:43:23,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-12-14 11:43:23,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369630208] [2022-12-14 11:43:23,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:43:23,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 11:43:23,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:43:23,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 11:43:23,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=909, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 11:43:23,887 INFO L87 Difference]: Start difference. First operand 231 states and 297 transitions. Second operand has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 16 states have internal predecessors, (37), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2022-12-14 11:43:24,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:43:24,546 INFO L93 Difference]: Finished difference Result 341 states and 448 transitions. [2022-12-14 11:43:24,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 11:43:24,547 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 16 states have internal predecessors, (37), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) Word has length 81 [2022-12-14 11:43:24,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:43:24,548 INFO L225 Difference]: With dead ends: 341 [2022-12-14 11:43:24,548 INFO L226 Difference]: Without dead ends: 232 [2022-12-14 11:43:24,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 196 SyntacticMatches, 14 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=262, Invalid=1630, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 11:43:24,550 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 66 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:43:24,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 242 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:43:24,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-12-14 11:43:24,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2022-12-14 11:43:24,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 145 states have (on average 1.1310344827586207) internal successors, (164), 147 states have internal predecessors, (164), 70 states have call successors, (70), 16 states have call predecessors, (70), 16 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2022-12-14 11:43:24,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 303 transitions. [2022-12-14 11:43:24,732 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 303 transitions. Word has length 81 [2022-12-14 11:43:24,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:43:24,732 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 303 transitions. [2022-12-14 11:43:24,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 16 states have internal predecessors, (37), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2022-12-14 11:43:24,732 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 303 transitions. [2022-12-14 11:43:24,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 11:43:24,733 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:43:24,733 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:43:24,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-14 11:43:24,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 11:43:24,934 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:43:24,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:43:24,935 INFO L85 PathProgramCache]: Analyzing trace with hash 144664241, now seen corresponding path program 3 times [2022-12-14 11:43:24,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:43:24,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750047324] [2022-12-14 11:43:24,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:43:24,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:43:24,957 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:43:24,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [918161946] [2022-12-14 11:43:24,958 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 11:43:24,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:43:24,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:43:24,961 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:43:24,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 11:43:25,021 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 11:43:25,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:43:25,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 11:43:25,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:43:25,131 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 58 proven. 13 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-12-14 11:43:25,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:43:25,258 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 28 proven. 13 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-12-14 11:43:25,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:43:25,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750047324] [2022-12-14 11:43:25,258 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:43:25,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918161946] [2022-12-14 11:43:25,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918161946] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:43:25,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1545180520] [2022-12-14 11:43:25,260 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-12-14 11:43:25,260 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:43:25,260 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:43:25,260 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:43:25,260 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:43:29,766 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-12-14 11:43:29,795 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-12-14 11:43:29,803 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:43:31,690 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9774#(and (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:43:31,690 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:43:31,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:43:31,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-12-14 11:43:31,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972451435] [2022-12-14 11:43:31,691 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:43:31,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 11:43:31,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:43:31,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 11:43:31,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 11:43:31,692 INFO L87 Difference]: Start difference. First operand 232 states and 303 transitions. Second operand has 17 states, 16 states have (on average 2.6875) internal successors, (43), 17 states have internal predecessors, (43), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) [2022-12-14 11:43:32,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:43:32,376 INFO L93 Difference]: Finished difference Result 292 states and 385 transitions. [2022-12-14 11:43:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 11:43:32,376 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 17 states have internal predecessors, (43), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) Word has length 81 [2022-12-14 11:43:32,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:43:32,377 INFO L225 Difference]: With dead ends: 292 [2022-12-14 11:43:32,377 INFO L226 Difference]: Without dead ends: 190 [2022-12-14 11:43:32,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 191 SyntacticMatches, 19 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=279, Invalid=1701, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 11:43:32,378 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 60 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:43:32,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 202 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:43:32,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-12-14 11:43:32,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-12-14 11:43:32,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 117 states have (on average 1.1538461538461537) internal successors, (135), 118 states have internal predecessors, (135), 61 states have call successors, (61), 11 states have call predecessors, (61), 11 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-12-14 11:43:32,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 256 transitions. [2022-12-14 11:43:32,539 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 256 transitions. Word has length 81 [2022-12-14 11:43:32,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:43:32,540 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 256 transitions. [2022-12-14 11:43:32,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 17 states have internal predecessors, (43), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) [2022-12-14 11:43:32,540 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 256 transitions. [2022-12-14 11:43:32,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-14 11:43:32,541 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:43:32,541 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:43:32,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-14 11:43:32,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 11:43:32,742 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:43:32,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:43:32,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2060029497, now seen corresponding path program 4 times [2022-12-14 11:43:32,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:43:32,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307320134] [2022-12-14 11:43:32,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:43:32,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:43:32,751 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:43:32,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492972533] [2022-12-14 11:43:32,752 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 11:43:32,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:43:32,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:43:32,753 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:43:32,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 11:43:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:43:32,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 11:43:32,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:43:32,919 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 99 proven. 17 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-12-14 11:43:32,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:43:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 37 proven. 19 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-12-14 11:43:33,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:43:33,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307320134] [2022-12-14 11:43:33,124 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:43:33,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492972533] [2022-12-14 11:43:33,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492972533] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:43:33,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [133057315] [2022-12-14 11:43:33,126 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-12-14 11:43:33,126 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:43:33,126 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:43:33,127 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:43:33,127 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:43:37,507 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-12-14 11:43:37,533 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-12-14 11:43:37,540 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:43:39,521 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11120#(and (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:43:39,521 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:43:39,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:43:39,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-12-14 11:43:39,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730872156] [2022-12-14 11:43:39,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:43:39,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-14 11:43:39,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:43:39,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-14 11:43:39,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 11:43:39,523 INFO L87 Difference]: Start difference. First operand 190 states and 256 transitions. Second operand has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 8 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2022-12-14 11:43:40,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:43:40,540 INFO L93 Difference]: Finished difference Result 329 states and 452 transitions. [2022-12-14 11:43:40,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 11:43:40,541 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 8 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) Word has length 91 [2022-12-14 11:43:40,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:43:40,542 INFO L225 Difference]: With dead ends: 329 [2022-12-14 11:43:40,543 INFO L226 Difference]: Without dead ends: 204 [2022-12-14 11:43:40,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 216 SyntacticMatches, 22 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=426, Invalid=2226, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 11:43:40,544 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 144 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 11:43:40,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 233 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 11:43:40,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-12-14 11:43:40,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 194. [2022-12-14 11:43:40,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 117 states have (on average 1.1538461538461537) internal successors, (135), 118 states have internal predecessors, (135), 65 states have call successors, (65), 11 states have call predecessors, (65), 11 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-12-14 11:43:40,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 264 transitions. [2022-12-14 11:43:40,716 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 264 transitions. Word has length 91 [2022-12-14 11:43:40,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:43:40,717 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 264 transitions. [2022-12-14 11:43:40,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 8 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2022-12-14 11:43:40,717 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 264 transitions. [2022-12-14 11:43:40,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-14 11:43:40,718 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:43:40,718 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:43:40,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 11:43:40,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 11:43:40,920 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:43:40,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:43:40,921 INFO L85 PathProgramCache]: Analyzing trace with hash -327458570, now seen corresponding path program 5 times [2022-12-14 11:43:40,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:43:40,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382643190] [2022-12-14 11:43:40,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:43:40,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:43:40,944 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:43:40,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [811549864] [2022-12-14 11:43:40,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:43:40,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:43:40,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:43:40,946 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:43:40,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 11:43:41,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 11:43:41,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:43:41,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-14 11:43:41,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:43:41,564 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 62 proven. 30 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-12-14 11:43:41,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:43:41,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:43:41,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382643190] [2022-12-14 11:43:41,786 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:43:41,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811549864] [2022-12-14 11:43:41,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811549864] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:43:41,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2045395524] [2022-12-14 11:43:41,787 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-12-14 11:43:41,787 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:43:41,787 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:43:41,787 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:43:41,787 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:43:46,368 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-12-14 11:43:46,409 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-12-14 11:43:46,418 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:43:50,925 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12390#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:43:50,925 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:43:50,925 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:43:50,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-12-14 11:43:50,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914095301] [2022-12-14 11:43:50,926 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-14 11:43:50,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 11:43:50,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:43:50,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 11:43:50,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1249, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 11:43:50,928 INFO L87 Difference]: Start difference. First operand 194 states and 264 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-12-14 11:43:51,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:43:51,945 INFO L93 Difference]: Finished difference Result 275 states and 378 transitions. [2022-12-14 11:43:51,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 11:43:51,946 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 108 [2022-12-14 11:43:51,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:43:51,948 INFO L225 Difference]: With dead ends: 275 [2022-12-14 11:43:51,948 INFO L226 Difference]: Without dead ends: 273 [2022-12-14 11:43:51,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 175 SyntacticMatches, 24 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1361 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=256, Invalid=2194, Unknown=0, NotChecked=0, Total=2450 [2022-12-14 11:43:51,950 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 97 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:43:51,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 199 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 11:43:51,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-12-14 11:43:52,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 225. [2022-12-14 11:43:52,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 136 states have (on average 1.1470588235294117) internal successors, (156), 137 states have internal predecessors, (156), 73 states have call successors, (73), 15 states have call predecessors, (73), 15 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-12-14 11:43:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 301 transitions. [2022-12-14 11:43:52,142 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 301 transitions. Word has length 108 [2022-12-14 11:43:52,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:43:52,142 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 301 transitions. [2022-12-14 11:43:52,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-12-14 11:43:52,142 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 301 transitions. [2022-12-14 11:43:52,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-12-14 11:43:52,143 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:43:52,143 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:43:52,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-14 11:43:52,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 11:43:52,345 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:43:52,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:43:52,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1702861936, now seen corresponding path program 2 times [2022-12-14 11:43:52,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:43:52,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669900400] [2022-12-14 11:43:52,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:43:52,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:43:52,358 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:43:52,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892564718] [2022-12-14 11:43:52,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:43:52,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:43:52,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:43:52,360 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:43:52,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-14 11:43:52,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 11:43:52,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:43:52,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 11:43:52,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:43:52,510 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 60 proven. 13 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-12-14 11:43:52,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:43:52,639 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 60 proven. 13 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-12-14 11:43:52,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:43:52,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669900400] [2022-12-14 11:43:52,639 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:43:52,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892564718] [2022-12-14 11:43:52,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892564718] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:43:52,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1844823429] [2022-12-14 11:43:52,641 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-12-14 11:43:52,641 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:43:52,641 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:43:52,641 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:43:52,642 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:43:57,156 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-12-14 11:43:57,159 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-12-14 11:43:57,167 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:43:58,657 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13969#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:43:58,657 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:43:58,657 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:43:58,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 15 [2022-12-14 11:43:58,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489754897] [2022-12-14 11:43:58,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:43:58,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 11:43:58,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:43:58,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 11:43:58,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=871, Unknown=0, NotChecked=0, Total=992 [2022-12-14 11:43:58,659 INFO L87 Difference]: Start difference. First operand 225 states and 301 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-12-14 11:43:59,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:43:59,398 INFO L93 Difference]: Finished difference Result 261 states and 353 transitions. [2022-12-14 11:43:59,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 11:43:59,399 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 125 [2022-12-14 11:43:59,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:43:59,400 INFO L225 Difference]: With dead ends: 261 [2022-12-14 11:43:59,400 INFO L226 Difference]: Without dead ends: 248 [2022-12-14 11:43:59,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 325 SyntacticMatches, 18 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=362, Invalid=1894, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 11:43:59,401 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 55 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:43:59,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 233 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:43:59,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-12-14 11:43:59,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 195. [2022-12-14 11:43:59,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 115 states have (on average 1.1217391304347826) internal successors, (129), 115 states have internal predecessors, (129), 64 states have call successors, (64), 15 states have call predecessors, (64), 15 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-12-14 11:43:59,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2022-12-14 11:43:59,568 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 125 [2022-12-14 11:43:59,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:43:59,568 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2022-12-14 11:43:59,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-12-14 11:43:59,568 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2022-12-14 11:43:59,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-14 11:43:59,569 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:43:59,569 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:43:59,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-14 11:43:59,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 11:43:59,772 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:43:59,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:43:59,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2018576436, now seen corresponding path program 6 times [2022-12-14 11:43:59,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:43:59,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662323138] [2022-12-14 11:43:59,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:43:59,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:43:59,799 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:43:59,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675033504] [2022-12-14 11:43:59,800 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 11:43:59,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:43:59,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:43:59,803 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:43:59,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-14 11:43:59,853 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 11:43:59,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:43:59,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 11:43:59,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:43:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 59 proven. 46 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2022-12-14 11:43:59,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:44:00,128 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 59 proven. 46 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2022-12-14 11:44:00,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:44:00,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662323138] [2022-12-14 11:44:00,128 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:44:00,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675033504] [2022-12-14 11:44:00,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675033504] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:44:00,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1955960426] [2022-12-14 11:44:00,129 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-12-14 11:44:00,129 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:44:00,130 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:44:00,130 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:44:00,130 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:44:04,272 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-12-14 11:44:04,306 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-12-14 11:44:04,314 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:44:06,901 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15509#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:44:06,901 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:44:06,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:44:06,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-12-14 11:44:06,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366960610] [2022-12-14 11:44:06,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:44:06,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 11:44:06,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:44:06,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 11:44:06,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1195, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 11:44:06,903 INFO L87 Difference]: Start difference. First operand 195 states and 257 transitions. Second operand has 21 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 12 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 11 states have call predecessors, (39), 11 states have call successors, (39) [2022-12-14 11:44:08,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:44:08,055 INFO L93 Difference]: Finished difference Result 350 states and 492 transitions. [2022-12-14 11:44:08,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 11:44:08,055 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 12 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 11 states have call predecessors, (39), 11 states have call successors, (39) Word has length 128 [2022-12-14 11:44:08,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:44:08,056 INFO L225 Difference]: With dead ends: 350 [2022-12-14 11:44:08,056 INFO L226 Difference]: Without dead ends: 245 [2022-12-14 11:44:08,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 316 SyntacticMatches, 31 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1607 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=433, Invalid=2537, Unknown=0, NotChecked=0, Total=2970 [2022-12-14 11:44:08,058 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 153 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:44:08,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 333 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 11:44:08,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-12-14 11:44:08,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 231. [2022-12-14 11:44:08,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 131 states have (on average 1.1145038167938932) internal successors, (146), 131 states have internal predecessors, (146), 84 states have call successors, (84), 15 states have call predecessors, (84), 15 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2022-12-14 11:44:08,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 314 transitions. [2022-12-14 11:44:08,281 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 314 transitions. Word has length 128 [2022-12-14 11:44:08,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:44:08,281 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 314 transitions. [2022-12-14 11:44:08,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 12 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 11 states have call predecessors, (39), 11 states have call successors, (39) [2022-12-14 11:44:08,281 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 314 transitions. [2022-12-14 11:44:08,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-14 11:44:08,282 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:44:08,282 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:44:08,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-14 11:44:08,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:44:08,484 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:44:08,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:44:08,485 INFO L85 PathProgramCache]: Analyzing trace with hash -450323068, now seen corresponding path program 7 times [2022-12-14 11:44:08,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:44:08,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998266352] [2022-12-14 11:44:08,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:44:08,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:44:08,509 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:44:08,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619935014] [2022-12-14 11:44:08,509 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 11:44:08,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:44:08,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:44:08,510 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:44:08,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 11:44:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:44:08,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 11:44:08,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:44:08,609 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 353 proven. 18 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-12-14 11:44:08,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:44:08,686 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 77 proven. 18 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2022-12-14 11:44:08,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:44:08,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998266352] [2022-12-14 11:44:08,686 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:44:08,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619935014] [2022-12-14 11:44:08,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619935014] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:44:08,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2050361921] [2022-12-14 11:44:08,688 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-12-14 11:44:08,688 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:44:08,688 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:44:08,688 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:44:08,688 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:44:13,220 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-12-14 11:44:13,256 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-12-14 11:44:13,267 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:44:14,752 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17285#(and (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:44:14,752 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:44:14,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:44:14,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-12-14 11:44:14,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984662466] [2022-12-14 11:44:14,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:44:14,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:44:14,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:44:14,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:44:14,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2022-12-14 11:44:14,754 INFO L87 Difference]: Start difference. First operand 231 states and 314 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2022-12-14 11:44:15,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:44:15,131 INFO L93 Difference]: Finished difference Result 400 states and 565 transitions. [2022-12-14 11:44:15,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 11:44:15,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) Word has length 133 [2022-12-14 11:44:15,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:44:15,133 INFO L225 Difference]: With dead ends: 400 [2022-12-14 11:44:15,133 INFO L226 Difference]: Without dead ends: 252 [2022-12-14 11:44:15,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 342 SyntacticMatches, 35 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2022-12-14 11:44:15,134 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 17 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:44:15,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 185 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:44:15,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-12-14 11:44:15,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 231. [2022-12-14 11:44:15,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 127 states have (on average 1.1338582677165354) internal successors, (144), 129 states have internal predecessors, (144), 89 states have call successors, (89), 14 states have call predecessors, (89), 14 states have return successors, (88), 87 states have call predecessors, (88), 88 states have call successors, (88) [2022-12-14 11:44:15,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 321 transitions. [2022-12-14 11:44:15,361 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 321 transitions. Word has length 133 [2022-12-14 11:44:15,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:44:15,361 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 321 transitions. [2022-12-14 11:44:15,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2022-12-14 11:44:15,361 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 321 transitions. [2022-12-14 11:44:15,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-12-14 11:44:15,362 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:44:15,362 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:44:15,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-14 11:44:15,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:44:15,563 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:44:15,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:44:15,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1847400172, now seen corresponding path program 8 times [2022-12-14 11:44:15,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:44:15,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919843851] [2022-12-14 11:44:15,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:44:15,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:44:15,599 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:44:15,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955889285] [2022-12-14 11:44:15,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:44:15,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:44:15,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:44:15,602 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:44:15,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-14 11:44:15,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 11:44:15,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:44:15,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-14 11:44:15,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:44:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 48 proven. 36 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-12-14 11:44:16,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:44:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 50 proven. 31 refuted. 0 times theorem prover too weak. 1213 trivial. 0 not checked. [2022-12-14 11:44:16,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:44:16,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919843851] [2022-12-14 11:44:16,561 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:44:16,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955889285] [2022-12-14 11:44:16,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955889285] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:44:16,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [985668346] [2022-12-14 11:44:16,562 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-12-14 11:44:16,562 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:44:16,562 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:44:16,562 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:44:16,563 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:44:21,596 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-12-14 11:44:21,631 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-12-14 11:44:21,641 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:44:27,527 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19370#(and (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:44:27,527 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:44:27,527 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:44:27,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2022-12-14 11:44:27,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951884134] [2022-12-14 11:44:27,528 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:44:27,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 11:44:27,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:44:27,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 11:44:27,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1121, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 11:44:27,530 INFO L87 Difference]: Start difference. First operand 231 states and 321 transitions. Second operand has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 11:44:29,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:44:29,956 INFO L93 Difference]: Finished difference Result 335 states and 475 transitions. [2022-12-14 11:44:29,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 11:44:29,957 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 172 [2022-12-14 11:44:29,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:44:29,958 INFO L225 Difference]: With dead ends: 335 [2022-12-14 11:44:29,958 INFO L226 Difference]: Without dead ends: 333 [2022-12-14 11:44:29,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 437 SyntacticMatches, 43 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1913 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=252, Invalid=1910, Unknown=0, NotChecked=0, Total=2162 [2022-12-14 11:44:29,959 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 75 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 11:44:29,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 251 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 11:44:29,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-12-14 11:44:30,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 248. [2022-12-14 11:44:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 140 states have (on average 1.1214285714285714) internal successors, (157), 142 states have internal predecessors, (157), 92 states have call successors, (92), 15 states have call predecessors, (92), 15 states have return successors, (91), 90 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-14 11:44:30,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 340 transitions. [2022-12-14 11:44:30,210 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 340 transitions. Word has length 172 [2022-12-14 11:44:30,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:44:30,210 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 340 transitions. [2022-12-14 11:44:30,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 11:44:30,210 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 340 transitions. [2022-12-14 11:44:30,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-12-14 11:44:30,211 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:44:30,211 INFO L195 NwaCegarLoop]: trace histogram [27, 26, 26, 7, 7, 7, 7, 7, 7, 6, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:44:30,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-14 11:44:30,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:44:30,413 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:44:30,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:44:30,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1606063294, now seen corresponding path program 9 times [2022-12-14 11:44:30,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:44:30,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798350859] [2022-12-14 11:44:30,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:44:30,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:44:30,442 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:44:30,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564967639] [2022-12-14 11:44:30,443 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 11:44:30,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:44:30,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:44:30,444 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:44:30,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-14 11:44:30,505 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 11:44:30,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:44:30,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 11:44:30,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:44:30,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1493 backedges. 267 proven. 105 refuted. 0 times theorem prover too weak. 1121 trivial. 0 not checked. [2022-12-14 11:44:30,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:44:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1493 backedges. 80 proven. 104 refuted. 0 times theorem prover too weak. 1309 trivial. 0 not checked. [2022-12-14 11:44:31,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:44:31,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798350859] [2022-12-14 11:44:31,032 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:44:31,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564967639] [2022-12-14 11:44:31,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564967639] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:44:31,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1507476308] [2022-12-14 11:44:31,033 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-12-14 11:44:31,033 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:44:31,033 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:44:31,034 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:44:31,034 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:44:35,526 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-12-14 11:44:35,556 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-12-14 11:44:35,564 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:44:38,048 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21431#(and (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:44:38,048 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:44:38,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:44:38,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2022-12-14 11:44:38,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943895716] [2022-12-14 11:44:38,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:44:38,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-14 11:44:38,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:44:38,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-14 11:44:38,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1784, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 11:44:38,051 INFO L87 Difference]: Start difference. First operand 248 states and 340 transitions. Second operand has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 27 states have internal predecessors, (69), 16 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (59), 16 states have call predecessors, (59), 16 states have call successors, (59) [2022-12-14 11:44:38,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:44:38,916 INFO L93 Difference]: Finished difference Result 257 states and 354 transitions. [2022-12-14 11:44:38,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 11:44:38,916 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 27 states have internal predecessors, (69), 16 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (59), 16 states have call predecessors, (59), 16 states have call successors, (59) Word has length 177 [2022-12-14 11:44:38,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:44:38,916 INFO L225 Difference]: With dead ends: 257 [2022-12-14 11:44:38,917 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 11:44:38,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 440 SyntacticMatches, 46 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=418, Invalid=2774, Unknown=0, NotChecked=0, Total=3192 [2022-12-14 11:44:38,919 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 109 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:44:38,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 281 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 11:44:38,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 11:44:38,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 11:44:38,920 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) [2022-12-14 11:44:38,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 11:44:38,920 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 177 [2022-12-14 11:44:38,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:44:38,920 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 11:44:38,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 27 states have internal predecessors, (69), 16 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (59), 16 states have call predecessors, (59), 16 states have call successors, (59) [2022-12-14 11:44:38,921 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 11:44:38,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 11:44:38,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 11:44:38,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-14 11:44:39,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:44:39,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 11:45:30,516 WARN L233 SmtUtils]: Spent 24.67s on a formula simplification. DAG size of input: 256 DAG size of output: 116 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-12-14 11:45:33,167 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse20 (select |#memory_int| 1))) (let ((.cse3 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse7 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse1 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse0 (= (select |#length| 3) 12)) (.cse17 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= 11 (select |#length| 2))) (.cse5 (= 2 (select |#length| 1))) (.cse6 (= (select |#valid| 3) 1)) (.cse8 (= (select |#valid| 1) 1)) (.cse19 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse9 (= (select |#valid| 0) 0)) (.cse10 (= (select |#valid| 2) 1)) (.cse11 (= |#NULL.offset| 0)) (.cse12 (= (select .cse20 0) 48)) (.cse13 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse14 (= (select .cse20 1) 0)) (.cse15 (< 0 |#StackHeapBarrier|)) (.cse16 (= |#NULL.base| 0))) (or (and (<= 0 |ULTIMATE.start_main_~b~0#1|) .cse0 (= .cse1 (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) .cse2 .cse3 (<= |ULTIMATE.start_main_~a~0#1| 2) (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|) .cse4 .cse5 .cse6 (<= (* 3 |ULTIMATE.start_main_~c~0#1|) 0) .cse7 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16) (and (let ((.cse18 (not (= (ite (and .cse2 (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)))) (or (and .cse0 (= |ULTIMATE.start_main_~temp~0#1| 0) (= (+ |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~p~0#1|)) 1) (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) .cse17 .cse18 .cse4 .cse5 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) .cse6 (= |ULTIMATE.start_main_~k~0#1| 0) .cse19 (not (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (= (+ |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~temp~0#1|)) (and .cse0 (not (= (ite .cse3 1 0) 0)) .cse18 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4 .cse5 .cse6 (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1)))) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (= .cse1 |ULTIMATE.start_main_~a~0#1|) .cse13 .cse14 .cse15 .cse16) (and (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1|) .cse0 (= |ULTIMATE.start_main_~p~0#1| 0) .cse17 .cse4 .cse5 .cse6 (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~s~0#1|) 0) (= |ULTIMATE.start_main_~q~0#1| 1) .cse8 .cse19 (not (<= (* 2 |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1|)) (or (<= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|))) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16)))) [2022-12-14 11:45:33,167 INFO L895 garLoopResultBuilder]: At program point L35-3(lines 35 73) the Hoare annotation is: (let ((.cse3 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse0 (+ .cse3 .cse4)) (.cse1 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse5 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= .cse0 (+ |ULTIMATE.start_main_~a~0#1| .cse1 .cse2)) (or (= |ULTIMATE.start_main_~b~0#1| 0) (< |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= .cse0 |ULTIMATE.start_main_~a~0#1|)) (or (= (+ .cse3 |ULTIMATE.start_main_~b~0#1| .cse4) (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* 2 .cse2) (* 2 .cse1))) (not (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (<= |ULTIMATE.start_main_~c~0#1| 0) (not (= (+ .cse1 .cse2) |ULTIMATE.start_main_~b~0#1|))) (<= 1 |ULTIMATE.start_main_~y~0#1|) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse5 0) 48) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse5 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0)))) [2022-12-14 11:45:33,167 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse25 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse26 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse30 (select |#memory_int| 1)) (.cse17 (+ .cse25 |ULTIMATE.start_main_~b~0#1| .cse26)) (.cse18 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse21 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse19 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse22 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse23 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= (select |#length| 3) 12)) (.cse8 (= 11 (select |#length| 2))) (.cse9 (= 2 (select |#length| 1))) (.cse10 (= (select |#valid| 3) 1)) (.cse2 (= (select |#valid| 1) 1)) (.cse14 (= (select |#valid| 0) 0))) (let ((.cse3 (and .cse4 (= |ULTIMATE.start_main_~temp~0#1| 0) (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse8 .cse9 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= |ULTIMATE.start_main_~q~0#1| 1) .cse2 (= |ULTIMATE.start_main_~r~0#1| 1) .cse14)) (.cse5 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse6 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse11 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (or (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|)) (= .cse17 (+ .cse18 .cse21 .cse19 .cse22 .cse23 .cse20)))) (.cse1 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse15 (= (select |#valid| 2) 1)) (.cse16 (= |#NULL.offset| 0)) (.cse24 (= (select .cse30 0) 48)) (.cse27 (= (select .cse30 1) 0)) (.cse28 (< 0 |#StackHeapBarrier|)) (.cse29 (= |#NULL.base| 0))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse1 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) .cse2 (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13)) .cse14 .cse15 .cse16 (or (= .cse17 (+ .cse18 .cse19 (* 2 .cse20) (* .cse21 2) .cse22 .cse23)) (not (= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse24 (= (+ .cse25 .cse26) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) .cse27 .cse28 .cse29) (and (<= (* (div |ULTIMATE.start_main_~v~0#1| 2) 2) |ULTIMATE.start_main_~c~0#1|) (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~r~0#1| 0) .cse11 .cse2 .cse14 .cse12 .cse13)) .cse0 .cse1 (<= |ULTIMATE.start_main_~c~0#1| 2) (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse15 .cse16 .cse24 .cse27 (= 2 |ULTIMATE.start_main_~d~0#1|) .cse28 .cse29))))) [2022-12-14 11:45:33,168 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2022-12-14 11:45:33,168 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) 1 0) 0)) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-12-14 11:45:33,168 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) 1 0) 0)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-12-14 11:45:33,168 INFO L899 garLoopResultBuilder]: For program point L53(lines 49 59) no Hoare annotation was computed. [2022-12-14 11:45:33,168 INFO L895 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (let ((.cse25 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse26 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse30 (select |#memory_int| 1)) (.cse17 (+ .cse25 |ULTIMATE.start_main_~b~0#1| .cse26)) (.cse18 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse21 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse19 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse22 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse23 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= (select |#length| 3) 12)) (.cse8 (= 11 (select |#length| 2))) (.cse9 (= 2 (select |#length| 1))) (.cse10 (= (select |#valid| 3) 1)) (.cse2 (= (select |#valid| 1) 1)) (.cse14 (= (select |#valid| 0) 0))) (let ((.cse3 (and .cse4 (= |ULTIMATE.start_main_~temp~0#1| 0) (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse8 .cse9 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= |ULTIMATE.start_main_~q~0#1| 1) .cse2 (= |ULTIMATE.start_main_~r~0#1| 1) .cse14)) (.cse5 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse6 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse11 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (or (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|)) (= .cse17 (+ .cse18 .cse21 .cse19 .cse22 .cse23 .cse20)))) (.cse1 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse15 (= (select |#valid| 2) 1)) (.cse16 (= |#NULL.offset| 0)) (.cse24 (= (select .cse30 0) 48)) (.cse27 (= (select .cse30 1) 0)) (.cse28 (< 0 |#StackHeapBarrier|)) (.cse29 (= |#NULL.base| 0))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse1 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) .cse2 (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13)) .cse14 .cse15 .cse16 (or (= .cse17 (+ .cse18 .cse19 (* 2 .cse20) (* .cse21 2) .cse22 .cse23)) (not (= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse24 (= (+ .cse25 .cse26) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) .cse27 .cse28 .cse29) (and (<= (* (div |ULTIMATE.start_main_~v~0#1| 2) 2) |ULTIMATE.start_main_~c~0#1|) (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~r~0#1| 0) .cse11 .cse2 .cse14 .cse12 .cse13)) .cse0 .cse1 (<= |ULTIMATE.start_main_~c~0#1| 2) (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse15 .cse16 .cse24 .cse27 (= 2 |ULTIMATE.start_main_~d~0#1|) .cse28 .cse29))))) [2022-12-14 11:45:33,168 INFO L899 garLoopResultBuilder]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2022-12-14 11:45:33,168 INFO L902 garLoopResultBuilder]: At program point L74(line 74) the Hoare annotation is: true [2022-12-14 11:45:33,168 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 11:45:33,168 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-12-14 11:45:33,169 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse25 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse26 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse30 (select |#memory_int| 1)) (.cse17 (+ .cse25 |ULTIMATE.start_main_~b~0#1| .cse26)) (.cse18 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse21 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse19 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse22 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse23 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= (select |#length| 3) 12)) (.cse8 (= 11 (select |#length| 2))) (.cse9 (= 2 (select |#length| 1))) (.cse10 (= (select |#valid| 3) 1)) (.cse2 (= (select |#valid| 1) 1)) (.cse14 (= (select |#valid| 0) 0))) (let ((.cse3 (and .cse4 (= |ULTIMATE.start_main_~temp~0#1| 0) (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse8 .cse9 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= |ULTIMATE.start_main_~q~0#1| 1) .cse2 (= |ULTIMATE.start_main_~r~0#1| 1) .cse14)) (.cse5 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse6 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse11 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (or (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|)) (= .cse17 (+ .cse18 .cse21 .cse19 .cse22 .cse23 .cse20)))) (.cse1 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse15 (= (select |#valid| 2) 1)) (.cse16 (= |#NULL.offset| 0)) (.cse24 (= (select .cse30 0) 48)) (.cse27 (= (select .cse30 1) 0)) (.cse28 (< 0 |#StackHeapBarrier|)) (.cse29 (= |#NULL.base| 0))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse1 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) .cse2 (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13)) .cse14 .cse15 .cse16 (or (= .cse17 (+ .cse18 .cse19 (* 2 .cse20) (* .cse21 2) .cse22 .cse23)) (not (= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse24 (= (+ .cse25 .cse26) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) .cse27 .cse28 .cse29) (and (<= (* (div |ULTIMATE.start_main_~v~0#1| 2) 2) |ULTIMATE.start_main_~c~0#1|) (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~r~0#1| 0) .cse11 .cse2 .cse14 .cse12 .cse13)) .cse0 .cse1 (<= |ULTIMATE.start_main_~c~0#1| 2) (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse15 .cse16 .cse24 .cse27 (= 2 |ULTIMATE.start_main_~d~0#1|) .cse28 .cse29))))) [2022-12-14 11:45:33,169 INFO L895 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (let ((.cse25 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse26 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse30 (select |#memory_int| 1)) (.cse17 (+ .cse25 |ULTIMATE.start_main_~b~0#1| .cse26)) (.cse18 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse21 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse19 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse22 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse23 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= (select |#length| 3) 12)) (.cse8 (= 11 (select |#length| 2))) (.cse9 (= 2 (select |#length| 1))) (.cse10 (= (select |#valid| 3) 1)) (.cse2 (= (select |#valid| 1) 1)) (.cse14 (= (select |#valid| 0) 0))) (let ((.cse3 (and .cse4 (= |ULTIMATE.start_main_~temp~0#1| 0) (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse8 .cse9 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= |ULTIMATE.start_main_~q~0#1| 1) .cse2 (= |ULTIMATE.start_main_~r~0#1| 1) .cse14)) (.cse5 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse6 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse11 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (or (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|)) (= .cse17 (+ .cse18 .cse21 .cse19 .cse22 .cse23 .cse20)))) (.cse1 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse15 (= (select |#valid| 2) 1)) (.cse16 (= |#NULL.offset| 0)) (.cse24 (= (select .cse30 0) 48)) (.cse27 (= (select .cse30 1) 0)) (.cse28 (< 0 |#StackHeapBarrier|)) (.cse29 (= |#NULL.base| 0))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse1 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) .cse2 (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13)) .cse14 .cse15 .cse16 (or (= .cse17 (+ .cse18 .cse19 (* 2 .cse20) (* .cse21 2) .cse22 .cse23)) (not (= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse24 (= (+ .cse25 .cse26) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) .cse27 .cse28 .cse29) (and (<= (* (div |ULTIMATE.start_main_~v~0#1| 2) 2) |ULTIMATE.start_main_~c~0#1|) (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~r~0#1| 0) .cse11 .cse2 .cse14 .cse12 .cse13)) .cse0 .cse1 (<= |ULTIMATE.start_main_~c~0#1| 2) (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse15 .cse16 .cse24 .cse27 (= 2 |ULTIMATE.start_main_~d~0#1|) .cse28 .cse29))))) [2022-12-14 11:45:33,169 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 11:45:33,169 INFO L895 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse29 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse30 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse28 (select |#memory_int| 1)) (.cse35 (+ .cse29 |ULTIMATE.start_main_~b~0#1| .cse30)) (.cse31 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse32 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse33 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse34 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse5 (or (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|)) (= .cse35 (+ .cse31 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) .cse32 .cse33 .cse34 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|))))) (.cse21 (= (+ .cse31 .cse32 .cse33 .cse34) .cse35)) (.cse23 (<= 0 |ULTIMATE.start_main_~c~0#1|)) (.cse2 (* 2 |ULTIMATE.start_main_~b~0#1|)) (.cse11 (= (select |#valid| 2) 1)) (.cse12 (= |#NULL.offset| 0)) (.cse14 (= (select .cse28 0) 48)) (.cse15 (= (+ .cse29 .cse30) |ULTIMATE.start_main_~a~0#1|)) (.cse16 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse17 (= (select .cse28 1) 0)) (.cse19 (< 0 |#StackHeapBarrier|)) (.cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse7 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse8 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse13 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse18 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (= (select |#length| 3) 12)) (.cse22 (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0))) (.cse3 (= 11 (select |#length| 2))) (.cse4 (= 2 (select |#length| 1))) (.cse6 (= (select |#valid| 3) 1)) (.cse24 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse9 (= (select |#valid| 1) 1)) (.cse26 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse10 (= (select |#valid| 0) 0)) (.cse25 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse20 (= |#NULL.base| 0))) (or (and (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 (not (<= .cse2 |ULTIMATE.start_main_~x~0#1|)) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse18 .cse19 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~x~0#1|) .cse20) (and .cse21 .cse0 (not (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (<= |ULTIMATE.start_main_~a~0#1| 2) .cse22 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|) .cse3 .cse4 .cse5 .cse6 .cse23 .cse24 (= |ULTIMATE.start_main_~s~0#1| 0) .cse25 .cse9 .cse26 .cse10 .cse11 .cse12 (not (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|)) .cse14 .cse15 .cse17 .cse19 .cse20) (and .cse21 .cse0 .cse1 .cse3 .cse4 .cse6 (<= (+ .cse2 |ULTIMATE.start_main_~c~0#1|) 2) .cse23 .cse7 .cse8 (<= (+ |ULTIMATE.start_main_~c~0#1| 1) .cse2) .cse25 .cse9 (= .cse2 |ULTIMATE.start_main_~v~0#1|) .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 (= 2 |ULTIMATE.start_main_~d~0#1|) .cse18 .cse19 .cse20) (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~k~0#1| 0) .cse11 .cse12 .cse14 .cse15 .cse16 .cse17 .cse19 (let ((.cse27 (not (= 0 (ite .cse25 1 0))))) (or (and .cse0 .cse27 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) .cse22 .cse1 .cse3 .cse4 .cse6 .cse7 .cse8 .cse9 .cse10 .cse13 .cse18) (and .cse0 (= |ULTIMATE.start_main_~temp~0#1| 0) .cse27 (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse22 (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3 .cse4 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse6 .cse24 .cse9 .cse26 .cse10))) .cse20))))) [2022-12-14 11:45:33,169 INFO L899 garLoopResultBuilder]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2022-12-14 11:45:33,169 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-12-14 11:45:33,169 INFO L895 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-12-14 11:45:33,169 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-12-14 11:45:33,170 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse25 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse26 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse30 (select |#memory_int| 1)) (.cse17 (+ .cse25 |ULTIMATE.start_main_~b~0#1| .cse26)) (.cse18 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse21 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse19 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse22 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse23 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= (select |#length| 3) 12)) (.cse8 (= 11 (select |#length| 2))) (.cse9 (= 2 (select |#length| 1))) (.cse10 (= (select |#valid| 3) 1)) (.cse2 (= (select |#valid| 1) 1)) (.cse14 (= (select |#valid| 0) 0))) (let ((.cse3 (and .cse4 (= |ULTIMATE.start_main_~temp~0#1| 0) (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse8 .cse9 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= |ULTIMATE.start_main_~q~0#1| 1) .cse2 (= |ULTIMATE.start_main_~r~0#1| 1) .cse14)) (.cse5 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse6 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse11 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (or (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|)) (= .cse17 (+ .cse18 .cse21 .cse19 .cse22 .cse23 .cse20)))) (.cse1 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse15 (= (select |#valid| 2) 1)) (.cse16 (= |#NULL.offset| 0)) (.cse24 (= (select .cse30 0) 48)) (.cse27 (= (select .cse30 1) 0)) (.cse28 (< 0 |#StackHeapBarrier|)) (.cse29 (= |#NULL.base| 0))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse1 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) .cse2 (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13)) .cse14 .cse15 .cse16 (or (= .cse17 (+ .cse18 .cse19 (* 2 .cse20) (* .cse21 2) .cse22 .cse23)) (not (= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse24 (= (+ .cse25 .cse26) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) .cse27 .cse28 .cse29) (and (<= (* (div |ULTIMATE.start_main_~v~0#1| 2) 2) |ULTIMATE.start_main_~c~0#1|) (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~r~0#1| 0) .cse11 .cse2 .cse14 .cse12 .cse13)) .cse0 .cse1 (<= |ULTIMATE.start_main_~c~0#1| 2) (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse15 .cse16 .cse24 .cse27 (= 2 |ULTIMATE.start_main_~d~0#1|) .cse28 .cse29))))) [2022-12-14 11:45:33,170 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2022-12-14 11:45:33,170 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2022-12-14 11:45:33,170 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-12-14 11:45:33,170 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-12-14 11:45:33,170 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-12-14 11:45:33,170 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-12-14 11:45:33,170 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 16) the Hoare annotation is: true [2022-12-14 11:45:33,170 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-12-14 11:45:33,170 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-12-14 11:45:33,172 INFO L445 BasicCegarLoop]: Path program histogram: [9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:45:33,173 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 11:45:33,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 11:45:33 BoogieIcfgContainer [2022-12-14 11:45:33,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 11:45:33,200 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 11:45:33,200 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 11:45:33,201 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 11:45:33,201 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:52" (3/4) ... [2022-12-14 11:45:33,204 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 11:45:33,209 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-12-14 11:45:33,209 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-14 11:45:33,213 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-12-14 11:45:33,213 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-12-14 11:45:33,213 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 11:45:33,214 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 11:45:33,250 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 11:45:33,250 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 11:45:33,251 INFO L158 Benchmark]: Toolchain (without parser) took 281042.05ms. Allocated memory was 142.6MB in the beginning and 434.1MB in the end (delta: 291.5MB). Free memory was 99.3MB in the beginning and 160.2MB in the end (delta: -60.9MB). Peak memory consumption was 232.0MB. Max. memory is 16.1GB. [2022-12-14 11:45:33,251 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 102.8MB. Free memory is still 68.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:45:33,251 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.18ms. Allocated memory is still 142.6MB. Free memory was 98.9MB in the beginning and 88.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 11:45:33,251 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.44ms. Allocated memory is still 142.6MB. Free memory was 88.3MB in the beginning and 86.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:45:33,251 INFO L158 Benchmark]: Boogie Preprocessor took 21.55ms. Allocated memory is still 142.6MB. Free memory was 86.7MB in the beginning and 85.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:45:33,252 INFO L158 Benchmark]: RCFGBuilder took 260.04ms. Allocated memory is still 142.6MB. Free memory was 85.5MB in the beginning and 72.6MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 11:45:33,252 INFO L158 Benchmark]: TraceAbstraction took 280478.40ms. Allocated memory was 142.6MB in the beginning and 434.1MB in the end (delta: 291.5MB). Free memory was 72.0MB in the beginning and 163.4MB in the end (delta: -91.3MB). Peak memory consumption was 255.2MB. Max. memory is 16.1GB. [2022-12-14 11:45:33,252 INFO L158 Benchmark]: Witness Printer took 49.94ms. Allocated memory is still 434.1MB. Free memory was 163.4MB in the beginning and 160.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 11:45:33,253 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 102.8MB. Free memory is still 68.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.18ms. Allocated memory is still 142.6MB. Free memory was 98.9MB in the beginning and 88.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.44ms. Allocated memory is still 142.6MB. Free memory was 88.3MB in the beginning and 86.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.55ms. Allocated memory is still 142.6MB. Free memory was 86.7MB in the beginning and 85.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 260.04ms. Allocated memory is still 142.6MB. Free memory was 85.5MB in the beginning and 72.6MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 280478.40ms. Allocated memory was 142.6MB in the beginning and 434.1MB in the end (delta: 291.5MB). Free memory was 72.0MB in the beginning and 163.4MB in the end (delta: -91.3MB). Peak memory consumption was 255.2MB. Max. memory is 16.1GB. * Witness Printer took 49.94ms. Allocated memory is still 434.1MB. Free memory was 163.4MB in the beginning and 160.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: 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 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 280.4s, OverallIterations: 21, TraceHistogramMax: 27, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 71.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 54.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 1913 SdHoareTripleChecker+Valid, 35.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1851 mSDsluCounter, 3707 SdHoareTripleChecker+Invalid, 34.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2896 mSDsCounter, 2091 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9252 IncrementalHoareTripleChecker+Invalid, 11348 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2091 mSolverCounterUnsat, 811 mSDtfsCounter, 9252 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4843 GetRequests, 3718 SyntacticMatches, 332 SemanticMatches, 793 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20824 ImplicationChecksByTransitivity, 99.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=248occurred in iteration=20, InterpolantAutomatonStates: 350, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 399 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 361 PreInvPairs, 429 NumberOfFragments, 3964 HoareAnnotationTreeSize, 361 FomulaSimplifications, 14259 FormulaSimplificationTreeSizeReduction, 12.5s HoareSimplificationTime, 15 FomulaSimplificationsInter, 371873 FormulaSimplificationTreeSizeReductionInter, 41.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 15.2s InterpolantComputationTime, 1666 NumberOfCodeBlocks, 1356 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 3001 ConstructedInterpolants, 12 QuantifiedInterpolants, 14219 SizeOfPredicates, 135 NumberOfNonLiveVariables, 3778 ConjunctsInSsa, 503 ConjunctsInUnsatCore, 37 InterpolantComputations, 3 PerfectInterpolantSequences, 11798/12526 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: OVERALL_TIME: 1.5s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 62, DAG_INTERPRETER_EARLY_EXITS: 3, TOOLS_POST_APPLICATIONS: 60, TOOLS_POST_TIME: 0.5s, TOOLS_POST_CALL_APPLICATIONS: 41, TOOLS_POST_CALL_TIME: 0.5s, TOOLS_POST_RETURN_APPLICATIONS: 26, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 127, TOOLS_QUANTIFIERELIM_TIME: 1.1s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 179, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 48, DOMAIN_JOIN_TIME: 0.2s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 4, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 62, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 0.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 4, CALL_SUMMARIZER_APPLICATIONS: 26, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 753, DAG_COMPRESSION_RETAINED_NODES: 183, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((k == 1 && unknown-#length-unknown[3] == 12) && b == y) && !(2 * b <= x)) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && (!(c == v) || r * y + b + p * x == k * q * x + d * q * x + k * s * y + s * y + q * x + d * s * y)) && \valid[3] == 1) && r == 0) && q == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && b <= x) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && b + c == x) && #NULL == 0) || ((((((((((((((((((((((((k * q * x + k * s * y + s * y + q * x == r * y + b + p * x && unknown-#length-unknown[3] == 12) && !(b <= c)) && a <= 2) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && b + 1 <= a) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && (!(c == v) || r * y + b + p * x == k * q * x + d * q * x + k * s * y + s * y + q * x + d * s * y)) && \valid[3] == 1) && 0 <= c) && q == 1) && s == 0) && 1 <= x) && \valid[1] == 1) && r == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && !(y <= x)) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((((((((((((((((((((((k * q * x + k * s * y + s * y + q * x == r * y + b + p * x && unknown-#length-unknown[3] == 12) && b == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 2 * b + c <= 2) && 0 <= c) && r == 0) && q == 0) && c + 1 <= 2 * b) && 1 <= x) && \valid[1] == 1) && 2 * b == v) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && 2 == d) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((((((a == c && k == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && ((((((((((((((unknown-#length-unknown[3] == 12 && !(0 == (if 1 <= x then 1 else 0))) && !((if 1 <= y then 1 else 0) == 0)) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && b == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && r == 0) && q == 0) && \valid[1] == 1) && \valid[0] == 0) && a == x) && s == 1) || ((((((((((((((unknown-#length-unknown[3] == 12 && temp == 0) && !(0 == (if 1 <= x then 1 else 0))) && s == temp) && a == y) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && x < y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == x) && \valid[3] == 1) && q == 1) && \valid[1] == 1) && r == 1) && \valid[0] == 0))) && #NULL == 0) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((((((((((((((a == c && (!(c == v) || r * y + b + p * x == k * q * x + d * q * x + k * s * y + s * y + q * x + d * s * y)) && b == v) && k == 0) && b <= c) && \valid[1] == 1) && ((((((((((((((((unknown-#length-unknown[3] == 12 && temp == 0) && !(0 == (if 1 <= x then 1 else 0))) && p == 0) && s == temp) && a == y) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && x < y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == x) && \valid[3] == 1) && q == 1) && \valid[1] == 1) && r == 1) && \valid[0] == 0) || (((((((((unknown-#length-unknown[3] == 12 && !((if 1 <= y then 1 else 0) == 0)) && p == 1) && b == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && q == 0) && a == x) && s == 1))) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && (r * y + b + p * x == k * q * x + k * s * y + 2 * (d * s * y) + d * q * x * 2 + s * y + q * x || !(2 * v == c))) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((((v / 2 * 2 <= c && ((((((((((((((((unknown-#length-unknown[3] == 12 && temp == 0) && !(0 == (if 1 <= x then 1 else 0))) && p == 0) && s == temp) && a == y) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && x < y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == x) && \valid[3] == 1) && q == 1) && \valid[1] == 1) && r == 1) && \valid[0] == 0) || ((((((((((((unknown-#length-unknown[3] == 12 && !((if 1 <= y then 1 else 0) == 0)) && p == 1) && b == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && r == 0) && q == 0) && \valid[1] == 1) && \valid[0] == 0) && a == x) && s == 1))) && (!(c == v) || r * y + b + p * x == k * q * x + d * q * x + k * s * y + s * y + q * x + d * s * y)) && k == 0) && c <= 2) && 2 * b == v) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 2 == d) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((0 <= b && unknown-#length-unknown[3] == 12) && r * y + p * x == a + s * y + q * x) && y <= 2) && 1 <= y) && a <= 2) && b + 1 <= a) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 3 * c <= 0) && 1 <= x) && b <= c) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((((((((((unknown-#length-unknown[3] == 12 && temp == 0) && q + k * p == 1) && c == x) && a == y) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == c) && \valid[3] == 1) && k == 0) && r == 1) && !(a <= c)) && k + s == temp) || ((((((((((unknown-#length-unknown[3] == 12 && !((if 1 <= y then 1 else 0) == 0)) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && b == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && r == 0) && q == 0) && a == x) && s == 1)) && 1 <= x) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((((((((((((((((((b + y == x && unknown-#length-unknown[3] == 12) && p == 0) && a == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && y <= x) && r + s == 0) && q == 1) && \valid[1] == 1) && r == 1) && !(2 * y <= x)) && (2 * v <= c || !(c == v))) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) RESULT: Ultimate proved your program to be correct! [2022-12-14 11:45:33,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1af888-706c-423e-b246-805d622abab1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE