./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/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_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/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_31f29b33-f108-49c0-95e7-4d6e01204df0/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 acfb876dde79fce1275c4e206713974ad548aff8bf1022b4ac21a21145aaa523 --- 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 10:32:42,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:32:42,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:32:42,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:32:42,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:32:42,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:32:42,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:32:42,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:32:42,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:32:42,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:32:42,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:32:42,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:32:42,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:32:42,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:32:42,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:32:42,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:32:42,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:32:42,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:32:42,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:32:42,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:32:42,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:32:42,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:32:42,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:32:42,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:32:42,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:32:42,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:32:42,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:32:42,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:32:42,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:32:42,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:32:42,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:32:42,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:32:42,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:32:42,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:32:42,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:32:42,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:32:42,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:32:42,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:32:42,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:32:42,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:32:42,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:32:42,409 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 10:32:42,427 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:32:42,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:32:42,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:32:42,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:32:42,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:32:42,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:32:42,429 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:32:42,429 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:32:42,429 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:32:42,429 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:32:42,429 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:32:42,429 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:32:42,429 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:32:42,430 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:32:42,430 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:32:42,430 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:32:42,430 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:32:42,430 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:32:42,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:32:42,431 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:32:42,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:32:42,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:32:42,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:32:42,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:32:42,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:32:42,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:32:42,431 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:32:42,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:32:42,432 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:32:42,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:32:42,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:32:42,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:32:42,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:32:42,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:32:42,432 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:32:42,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:32:42,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:32:42,433 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:32:42,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:32:42,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:32:42,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:32:42,433 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_31f29b33-f108-49c0-95e7-4d6e01204df0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acfb876dde79fce1275c4e206713974ad548aff8bf1022b4ac21a21145aaa523 [2022-12-14 10:32:42,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:32:42,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:32:42,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:32:42,618 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:32:42,618 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:32:42,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound10.c [2022-12-14 10:32:45,123 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:32:45,284 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:32:45,285 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound10.c [2022-12-14 10:32:45,289 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/data/c013790f9/5f96dce3003d40d9878e3b03604757eb/FLAGf87bbe77d [2022-12-14 10:32:45,681 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/data/c013790f9/5f96dce3003d40d9878e3b03604757eb [2022-12-14 10:32:45,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:32:45,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:32:45,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:32:45,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:32:45,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:32:45,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:32:45" (1/1) ... [2022-12-14 10:32:45,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@333706e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:32:45, skipping insertion in model container [2022-12-14 10:32:45,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:32:45" (1/1) ... [2022-12-14 10:32:45,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:32:45,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:32:45,802 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_31f29b33-f108-49c0-95e7-4d6e01204df0/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound10.c[537,550] [2022-12-14 10:32:45,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:32:45,821 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:32:45,829 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_31f29b33-f108-49c0-95e7-4d6e01204df0/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound10.c[537,550] [2022-12-14 10:32:45,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:32:45,844 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:32:45,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:32:45 WrapperNode [2022-12-14 10:32:45,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:32:45,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:32:45,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:32:45,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:32:45,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:32:45" (1/1) ... [2022-12-14 10:32:45,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:32:45" (1/1) ... [2022-12-14 10:32:45,869 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2022-12-14 10:32:45,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:32:45,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:32:45,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:32:45,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:32:45,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:32:45" (1/1) ... [2022-12-14 10:32:45,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:32:45" (1/1) ... [2022-12-14 10:32:45,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:32:45" (1/1) ... [2022-12-14 10:32:45,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:32:45" (1/1) ... [2022-12-14 10:32:45,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:32:45" (1/1) ... [2022-12-14 10:32:45,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:32:45" (1/1) ... [2022-12-14 10:32:45,884 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:32:45" (1/1) ... [2022-12-14 10:32:45,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:32:45" (1/1) ... [2022-12-14 10:32:45,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:32:45,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:32:45,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:32:45,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:32:45,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:32:45" (1/1) ... [2022-12-14 10:32:45,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:32:45,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:32:45,911 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:32:45,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:32:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:32:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 10:32:45,939 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 10:32:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:32:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:32:45,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:32:45,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 10:32:45,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 10:32:45,989 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:32:45,990 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:32:46,089 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:32:46,115 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:32:46,115 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 10:32:46,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:32:46 BoogieIcfgContainer [2022-12-14 10:32:46,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:32:46,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:32:46,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:32:46,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:32:46,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:32:45" (1/3) ... [2022-12-14 10:32:46,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc1100f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:32:46, skipping insertion in model container [2022-12-14 10:32:46,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:32:45" (2/3) ... [2022-12-14 10:32:46,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc1100f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:32:46, skipping insertion in model container [2022-12-14 10:32:46,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:32:46" (3/3) ... [2022-12-14 10:32:46,125 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound10.c [2022-12-14 10:32:46,140 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:32:46,140 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 10:32:46,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:32:46,184 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;@158caf72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:32:46,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 10:32:46,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 10:32:46,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 10:32:46,193 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:32:46,194 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:32:46,194 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:32:46,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:32:46,198 INFO L85 PathProgramCache]: Analyzing trace with hash 763440750, now seen corresponding path program 1 times [2022-12-14 10:32:46,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:32:46,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363196430] [2022-12-14 10:32:46,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:32:46,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:32:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:32:46,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 10:32:46,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:32:46,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363196430] [2022-12-14 10:32:46,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363196430] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:32:46,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:32:46,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:32:46,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231726151] [2022-12-14 10:32:46,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:32:46,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:32:46,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:32:46,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:32:46,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:32:46,499 INFO L87 Difference]: Start difference. First operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 10:32:46,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:32:46,580 INFO L93 Difference]: Finished difference Result 58 states and 96 transitions. [2022-12-14 10:32:46,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:32:46,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2022-12-14 10:32:46,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:32:46,588 INFO L225 Difference]: With dead ends: 58 [2022-12-14 10:32:46,588 INFO L226 Difference]: Without dead ends: 35 [2022-12-14 10:32:46,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 10:32:46,593 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 11 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:32:46,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 108 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:32:46,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-14 10:32:46,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2022-12-14 10:32:46,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 10:32:46,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2022-12-14 10:32:46,633 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 17 [2022-12-14 10:32:46,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:32:46,633 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2022-12-14 10:32:46,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 10:32:46,634 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2022-12-14 10:32:46,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 10:32:46,635 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:32:46,635 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:32:46,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:32:46,636 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:32:46,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:32:46,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1804559349, now seen corresponding path program 1 times [2022-12-14 10:32:46,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:32:46,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215049893] [2022-12-14 10:32:46,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:32:46,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:32:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:32:46,921 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 10:32:46,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:32:46,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215049893] [2022-12-14 10:32:46,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215049893] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:32:46,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:32:46,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:32:46,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434678766] [2022-12-14 10:32:46,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:32:46,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:32:46,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:32:46,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:32:46,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:32:46,926 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 10:32:47,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:32:47,012 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2022-12-14 10:32:47,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:32:47,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22 [2022-12-14 10:32:47,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:32:47,014 INFO L225 Difference]: With dead ends: 41 [2022-12-14 10:32:47,014 INFO L226 Difference]: Without dead ends: 39 [2022-12-14 10:32:47,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 10:32:47,016 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:32:47,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 100 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:32:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-14 10:32:47,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2022-12-14 10:32:47,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 10:32:47,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-12-14 10:32:47,028 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 22 [2022-12-14 10:32:47,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:32:47,029 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-12-14 10:32:47,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 10:32:47,029 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-12-14 10:32:47,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 10:32:47,030 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:32:47,030 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:32:47,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:32:47,031 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:32:47,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:32:47,032 INFO L85 PathProgramCache]: Analyzing trace with hash 496345742, now seen corresponding path program 1 times [2022-12-14 10:32:47,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:32:47,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346921006] [2022-12-14 10:32:47,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:32:47,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:32:47,046 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:32:47,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480172206] [2022-12-14 10:32:47,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:32:47,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:32:47,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:32:47,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:32:47,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:32:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:32:47,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-14 10:32:47,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:32:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 10:32:47,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:32:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 10:32:47,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:32:47,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346921006] [2022-12-14 10:32:47,365 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:32:47,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480172206] [2022-12-14 10:32:47,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480172206] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:32:47,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [109368015] [2022-12-14 10:32:47,381 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 10:32:47,381 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:32:47,384 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:32:47,388 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:32:47,388 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:32:47,741 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-12-14 10:32:47,752 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-12-14 10:32:47,754 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:32:48,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [109368015] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:32:48,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:32:48,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 7] total 21 [2022-12-14 10:32:48,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736499222] [2022-12-14 10:32:48,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:32:48,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 10:32:48,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:32:48,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 10:32:48,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-12-14 10:32:48,266 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 11 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-14 10:32:48,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:32:48,559 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2022-12-14 10:32:48,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 10:32:48,559 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 27 [2022-12-14 10:32:48,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:32:48,560 INFO L225 Difference]: With dead ends: 68 [2022-12-14 10:32:48,560 INFO L226 Difference]: Without dead ends: 50 [2022-12-14 10:32:48,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2022-12-14 10:32:48,562 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 40 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:32:48,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 39 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:32:48,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-14 10:32:48,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-12-14 10:32:48,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 10:32:48,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2022-12-14 10:32:48,582 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 27 [2022-12-14 10:32:48,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:32:48,582 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2022-12-14 10:32:48,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-14 10:32:48,583 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2022-12-14 10:32:48,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-14 10:32:48,584 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:32:48,584 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:32:48,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:32:48,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:32:48,785 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:32:48,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:32:48,785 INFO L85 PathProgramCache]: Analyzing trace with hash -202147981, now seen corresponding path program 1 times [2022-12-14 10:32:48,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:32:48,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338333741] [2022-12-14 10:32:48,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:32:48,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:32:48,794 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:32:48,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943629165] [2022-12-14 10:32:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:32:48,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:32:48,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:32:48,796 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:32:48,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:32:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:32:48,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-14 10:32:48,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:32:49,187 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 10:32:49,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:32:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-14 10:32:49,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:32:49,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338333741] [2022-12-14 10:32:49,611 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:32:49,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943629165] [2022-12-14 10:32:49,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943629165] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:32:49,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2134100370] [2022-12-14 10:32:49,613 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-12-14 10:32:49,613 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:32:49,613 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:32:49,613 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:32:49,613 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:32:51,259 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 18 for LOIs [2022-12-14 10:32:51,267 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-12-14 10:32:51,268 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:32:51,930 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '919#(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 10:32:51,930 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:32:51,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:32:51,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2022-12-14 10:32:51,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891733227] [2022-12-14 10:32:51,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 10:32:51,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 10:32:51,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:32:51,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 10:32:51,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2022-12-14 10:32:51,933 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 17 states, 16 states have (on average 1.625) internal successors, (26), 13 states have internal predecessors, (26), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2022-12-14 10:32:54,841 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 10:32:55,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:32:55,509 INFO L93 Difference]: Finished difference Result 74 states and 90 transitions. [2022-12-14 10:32:55,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 10:32:55,510 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.625) internal successors, (26), 13 states have internal predecessors, (26), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) Word has length 44 [2022-12-14 10:32:55,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:32:55,511 INFO L225 Difference]: With dead ends: 74 [2022-12-14 10:32:55,511 INFO L226 Difference]: Without dead ends: 66 [2022-12-14 10:32:55,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2022-12-14 10:32:55,512 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 35 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:32:55,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 106 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 352 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-12-14 10:32:55,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-12-14 10:32:55,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-12-14 10:32:55,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 39 states have internal predecessors, (41), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-12-14 10:32:55,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2022-12-14 10:32:55,527 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 44 [2022-12-14 10:32:55,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:32:55,527 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2022-12-14 10:32:55,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.625) internal successors, (26), 13 states have internal predecessors, (26), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2022-12-14 10:32:55,528 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2022-12-14 10:32:55,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 10:32:55,528 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:32:55,528 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 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 10:32:55,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 10:32:55,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:32:55,730 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:32:55,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:32:55,732 INFO L85 PathProgramCache]: Analyzing trace with hash -567180131, now seen corresponding path program 1 times [2022-12-14 10:32:55,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:32:55,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802015622] [2022-12-14 10:32:55,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:32:55,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:32:55,756 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:32:55,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921199254] [2022-12-14 10:32:55,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:32:55,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:32:55,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:32:55,760 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:32:55,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:32:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:32:55,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-14 10:32:55,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:32:56,045 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-12-14 10:32:56,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:32:57,360 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-14 10:32:57,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:32:57,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802015622] [2022-12-14 10:32:57,360 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:32:57,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921199254] [2022-12-14 10:32:57,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921199254] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:32:57,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [694653411] [2022-12-14 10:32:57,362 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-12-14 10:32:57,362 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:32:57,362 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:32:57,362 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:32:57,362 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:32:58,697 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2022-12-14 10:32:58,731 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-12-14 10:32:58,732 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:33:00,405 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1465#(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 10:33:00,406 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:33:00,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:33:00,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2022-12-14 10:33:00,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889584302] [2022-12-14 10:33:00,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 10:33:00,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 10:33:00,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:33:00,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 10:33:00,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2022-12-14 10:33:00,407 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 8 states have call predecessors, (18), 7 states have call successors, (18) [2022-12-14 10:33:04,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 10:33:06,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:33:06,978 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2022-12-14 10:33:06,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 10:33:06,979 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 8 states have call predecessors, (18), 7 states have call successors, (18) Word has length 51 [2022-12-14 10:33:06,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:33:06,979 INFO L225 Difference]: With dead ends: 78 [2022-12-14 10:33:06,980 INFO L226 Difference]: Without dead ends: 76 [2022-12-14 10:33:06,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 116 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2022-12-14 10:33:06,980 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:33:06,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 85 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 306 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-12-14 10:33:06,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-12-14 10:33:06,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2022-12-14 10:33:06,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 42 states have (on average 1.119047619047619) internal successors, (47), 45 states have internal predecessors, (47), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-14 10:33:06,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2022-12-14 10:33:06,996 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 51 [2022-12-14 10:33:06,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:33:06,997 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2022-12-14 10:33:06,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 8 states have call predecessors, (18), 7 states have call successors, (18) [2022-12-14 10:33:06,997 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2022-12-14 10:33:06,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-14 10:33:06,998 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:33:06,998 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 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] [2022-12-14 10:33:07,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 10:33:07,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:33:07,199 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:33:07,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:33:07,200 INFO L85 PathProgramCache]: Analyzing trace with hash 166119996, now seen corresponding path program 1 times [2022-12-14 10:33:07,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:33:07,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082934863] [2022-12-14 10:33:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:33:07,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:33:07,210 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:33:07,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1635163001] [2022-12-14 10:33:07,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:33:07,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:33:07,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:33:07,213 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:33:07,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31f29b33-f108-49c0-95e7-4d6e01204df0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 10:33:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:33:08,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-14 10:33:08,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:33:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-12-14 10:33:09,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:33:47,041 WARN L233 SmtUtils]: Spent 6.28s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:34:47,322 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~p~0#1| 4294967296)) (.cse2 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296)) (.cse1 (mod |c_ULTIMATE.start_main_~d~0#1| 4294967296))) (or (= .cse0 1) (<= .cse1 .cse2) (not (= .cse1 (mod (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~B~0#1|) 4294967296))) (let ((.cse6 (div .cse1 2))) (let ((.cse3 (<= (mod .cse6 4294967296) .cse2)) (.cse7 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse5 (* |c_ULTIMATE.start_main_~B~0#1| |c_ULTIMATE.start_main_~q~0#1|))) (and (or (not .cse3) (let ((.cse4 (* |c_ULTIMATE.start_main_~B~0#1| (div .cse0 2)))) (let ((.cse8 (* (div (+ .cse4 (- .cse6) .cse5 |c_ULTIMATE.start_main_~r~0#1|) 4294967296) 4294967296))) (and (< (+ .cse4 .cse5 |c_ULTIMATE.start_main_~r~0#1|) (+ .cse6 .cse7 1 .cse8)) (< (+ .cse6 .cse7 .cse8) (+ .cse4 .cse5 |c_ULTIMATE.start_main_~r~0#1| 1)))))) (or .cse3 (let ((.cse10 (+ .cse5 |c_ULTIMATE.start_main_~r~0#1|))) (let ((.cse9 (* (div .cse10 4294967296) 4294967296))) (and (< (+ .cse7 .cse9) (+ .cse5 |c_ULTIMATE.start_main_~r~0#1| 1)) (< .cse10 (+ .cse7 1 .cse9))))))))))) is different from true [2022-12-14 10:37:23,537 WARN L233 SmtUtils]: Spent 9.59s on a formula simplification that was a NOOP. DAG size: 41 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:37:37,683 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 35 proven. 19 refuted. 0 times theorem prover too weak. 82 trivial. 5 not checked. [2022-12-14 10:37:37,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:37:37,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082934863] [2022-12-14 10:37:37,683 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:37:37,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635163001] [2022-12-14 10:37:37,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635163001] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:37:37,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1208486332] [2022-12-14 10:37:37,686 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-12-14 10:37:37,686 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:37:37,686 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:37:37,686 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:37:37,687 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:37:40,551 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-12-14 10:37:40,554 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-12-14 10:37:40,555 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:38:15,265 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2108#(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 10:38:15,265 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:38:15,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:38:15,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2022-12-14 10:38:15,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846758931] [2022-12-14 10:38:15,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 10:38:15,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 10:38:15,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:38:15,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 10:38:15,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=843, Unknown=24, NotChecked=60, Total=1056 [2022-12-14 10:38:15,268 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 21 states, 20 states have (on average 1.7) internal successors, (34), 17 states have internal predecessors, (34), 11 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 11 states have call predecessors, (22), 9 states have call successors, (22) [2022-12-14 10:38:17,720 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 10:38:18,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:38:20,834 WARN L539 Checker$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 10:38:25,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:38:28,407 WARN L539 Checker$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 10:38:30,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:38:32,752 WARN L539 Checker$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 10:38:37,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:38:39,895 WARN L539 Checker$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 10:38:42,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:38:45,217 WARN L539 Checker$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 10:38:47,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:38:49,645 WARN L539 Checker$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 10:38:51,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:38:53,750 WARN L539 Checker$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 10:39:04,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:39:06,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:39:09,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:39:11,261 WARN L539 Checker$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 10:39:13,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:40:27,781 WARN L233 SmtUtils]: Spent 1.07m on a formula simplification. DAG size of input: 58 DAG size of output: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:40:29,786 WARN L539 Checker$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 10:40:31,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:40:33,797 WARN L539 Checker$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 10:40:36,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:40:38,567 WARN L539 Checker$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 10:40:40,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:40:44,883 WARN L539 Checker$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 10:40:46,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:40:51,359 WARN L539 Checker$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 10:40:53,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:40:55,403 WARN L539 Checker$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 10:40:58,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:41:00,395 WARN L539 Checker$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 10:41:02,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:41:04,785 WARN L539 Checker$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 10:42:22,212 WARN L233 SmtUtils]: Spent 1.22m on a formula simplification. DAG size of input: 81 DAG size of output: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:42:24,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:43:57,008 WARN L233 SmtUtils]: Spent 1.38m on a formula simplification. DAG size of input: 83 DAG size of output: 72 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:44:00,629 WARN L539 Checker$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 10:44:02,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:44:03,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:44:05,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:44:08,446 WARN L539 Checker$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 10:44:10,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:44:12,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:44:16,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:44:18,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:44:21,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:44:22,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:44:23,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:44:25,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:44:27,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:44:30,447 WARN L539 Checker$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 10:44:32,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:44:34,466 WARN L539 Checker$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 10:45:06,165 WARN L233 SmtUtils]: Spent 21.16s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:45:09,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:45:11,788 WARN L539 Checker$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 10:45:14,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:45:16,299 WARN L539 Checker$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 10:45:18,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:45:20,313 WARN L539 Checker$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 10:45:21,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:45:24,327 WARN L539 Checker$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 10:45:25,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:45:27,517 WARN L539 Checker$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 10:45:28,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:45:30,923 WARN L539 Checker$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 10:45:32,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:45:37,225 WARN L539 Checker$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 10:45:39,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:45:41,295 WARN L539 Checker$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 10:45:43,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:45:46,469 WARN L539 Checker$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 10:45:48,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:45:50,478 WARN L539 Checker$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 10:45:52,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:46:17,170 WARN L233 SmtUtils]: Spent 13.78s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:46:19,175 WARN L539 Checker$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 10:46:21,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:46:23,191 WARN L539 Checker$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 10:46:24,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:46:26,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:46:28,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:46:30,397 WARN L539 Checker$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 10:46:32,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:46:34,221 WARN L539 Checker$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 10:46:42,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 10:46:44,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []