./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/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_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/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_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/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 3969c56ba3ed63965cbeb782ee88e7216b6985c490408396983bf5f457467675 --- 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 12:48:19,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:48:19,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:48:19,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:48:19,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:48:19,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:48:19,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:48:19,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:48:19,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:48:19,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:48:19,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:48:19,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:48:19,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:48:19,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:48:19,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:48:19,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:48:19,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:48:19,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:48:19,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:48:19,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:48:19,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:48:19,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:48:19,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:48:19,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:48:19,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:48:19,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:48:19,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:48:19,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:48:19,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:48:19,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:48:19,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:48:19,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:48:19,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:48:19,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:48:19,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:48:19,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:48:19,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:48:19,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:48:19,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:48:19,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:48:19,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:48:19,112 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 12:48:19,129 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:48:19,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:48:19,130 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:48:19,130 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:48:19,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:48:19,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:48:19,131 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:48:19,131 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:48:19,131 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:48:19,131 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:48:19,131 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:48:19,131 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:48:19,131 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:48:19,131 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:48:19,131 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:48:19,132 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:48:19,132 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:48:19,132 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:48:19,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:48:19,132 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:48:19,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:48:19,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:48:19,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:48:19,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:48:19,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:48:19,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:48:19,133 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:48:19,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:48:19,133 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:48:19,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:48:19,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:48:19,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:48:19,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:48:19,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:48:19,134 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:48:19,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:48:19,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:48:19,135 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:48:19,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:48:19,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:48:19,135 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:48:19,135 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_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3969c56ba3ed63965cbeb782ee88e7216b6985c490408396983bf5f457467675 [2022-12-14 12:48:19,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:48:19,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:48:19,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:48:19,321 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:48:19,321 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:48:19,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c [2022-12-14 12:48:21,941 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:48:22,092 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:48:22,093 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c [2022-12-14 12:48:22,097 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/data/8011a7524/11c93d3a35a548f5a1476e496bb51d80/FLAG573abbc13 [2022-12-14 12:48:22,108 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/data/8011a7524/11c93d3a35a548f5a1476e496bb51d80 [2022-12-14 12:48:22,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:48:22,111 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:48:22,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:48:22,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:48:22,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:48:22,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:48:22" (1/1) ... [2022-12-14 12:48:22,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ac8340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:22, skipping insertion in model container [2022-12-14 12:48:22,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:48:22" (1/1) ... [2022-12-14 12:48:22,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:48:22,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:48:22,240 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_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c[537,550] [2022-12-14 12:48:22,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:48:22,259 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:48:22,267 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_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c[537,550] [2022-12-14 12:48:22,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:48:22,282 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:48:22,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:22 WrapperNode [2022-12-14 12:48:22,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:48:22,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:48:22,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:48:22,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:48:22,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:22" (1/1) ... [2022-12-14 12:48:22,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:22" (1/1) ... [2022-12-14 12:48:22,305 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2022-12-14 12:48:22,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:48:22,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:48:22,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:48:22,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:48:22,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:22" (1/1) ... [2022-12-14 12:48:22,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:22" (1/1) ... [2022-12-14 12:48:22,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:22" (1/1) ... [2022-12-14 12:48:22,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:22" (1/1) ... [2022-12-14 12:48:22,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:22" (1/1) ... [2022-12-14 12:48:22,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:22" (1/1) ... [2022-12-14 12:48:22,319 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:22" (1/1) ... [2022-12-14 12:48:22,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:22" (1/1) ... [2022-12-14 12:48:22,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:48:22,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:48:22,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:48:22,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:48:22,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:22" (1/1) ... [2022-12-14 12:48:22,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:48:22,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:48:22,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:48:22,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:48:22,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:48:22,370 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 12:48:22,370 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 12:48:22,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:48:22,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:48:22,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:48:22,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 12:48:22,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 12:48:22,421 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:48:22,422 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:48:22,528 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:48:22,551 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:48:22,551 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 12:48:22,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:48:22 BoogieIcfgContainer [2022-12-14 12:48:22,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:48:22,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:48:22,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:48:22,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:48:22,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:48:22" (1/3) ... [2022-12-14 12:48:22,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1631663e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:48:22, skipping insertion in model container [2022-12-14 12:48:22,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:22" (2/3) ... [2022-12-14 12:48:22,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1631663e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:48:22, skipping insertion in model container [2022-12-14 12:48:22,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:48:22" (3/3) ... [2022-12-14 12:48:22,560 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound2.c [2022-12-14 12:48:22,574 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:48:22,574 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 12:48:22,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:48:22,614 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;@56343f69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:48:22,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 12:48:22,617 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 12:48:22,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 12:48:22,623 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:22,623 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:48:22,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:48:22,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:22,628 INFO L85 PathProgramCache]: Analyzing trace with hash 763440750, now seen corresponding path program 1 times [2022-12-14 12:48:22,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:48:22,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780893636] [2022-12-14 12:48:22,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:22,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:48:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:22,907 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 12:48:22,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:48:22,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780893636] [2022-12-14 12:48:22,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780893636] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:48:22,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:48:22,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 12:48:22,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085529507] [2022-12-14 12:48:22,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:48:22,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:48:22,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:48:22,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:48:22,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:48:22,937 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 12:48:23,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:23,021 INFO L93 Difference]: Finished difference Result 58 states and 96 transitions. [2022-12-14 12:48:23,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:48:23,023 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 12:48:23,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:23,030 INFO L225 Difference]: With dead ends: 58 [2022-12-14 12:48:23,030 INFO L226 Difference]: Without dead ends: 35 [2022-12-14 12:48:23,033 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 12:48:23,035 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 12:48:23,036 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 12:48:23,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-14 12:48:23,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2022-12-14 12:48:23,064 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 12:48:23,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2022-12-14 12:48:23,066 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 17 [2022-12-14 12:48:23,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:23,066 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2022-12-14 12:48:23,067 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 12:48:23,067 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2022-12-14 12:48:23,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 12:48:23,068 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:23,068 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 12:48:23,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:48:23,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:48:23,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:23,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1804559349, now seen corresponding path program 1 times [2022-12-14 12:48:23,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:48:23,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448581340] [2022-12-14 12:48:23,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:23,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:48:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:23,304 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 12:48:23,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:48:23,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448581340] [2022-12-14 12:48:23,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448581340] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:48:23,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:48:23,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 12:48:23,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347414793] [2022-12-14 12:48:23,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:48:23,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:48:23,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:48:23,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:48:23,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:48:23,308 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 12:48:23,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:23,402 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2022-12-14 12:48:23,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:48:23,403 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 12:48:23,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:23,404 INFO L225 Difference]: With dead ends: 41 [2022-12-14 12:48:23,404 INFO L226 Difference]: Without dead ends: 39 [2022-12-14 12:48:23,404 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 12:48:23,406 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 12:48:23,406 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 12:48:23,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-14 12:48:23,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2022-12-14 12:48:23,416 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 12:48:23,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-12-14 12:48:23,417 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 22 [2022-12-14 12:48:23,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:23,418 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-12-14 12:48:23,418 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 12:48:23,418 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-12-14 12:48:23,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 12:48:23,419 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:23,419 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 12:48:23,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:48:23,420 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:48:23,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:23,420 INFO L85 PathProgramCache]: Analyzing trace with hash 496345742, now seen corresponding path program 1 times [2022-12-14 12:48:23,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:48:23,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532444389] [2022-12-14 12:48:23,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:23,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:48:23,439 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 12:48:23,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680685341] [2022-12-14 12:48:23,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:23,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:48:23,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:48:23,441 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:48:23,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 12:48:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:23,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-14 12:48:23,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:23,593 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 12:48:23,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:23,792 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 12:48:23,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:48:23,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532444389] [2022-12-14 12:48:23,792 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 12:48:23,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680685341] [2022-12-14 12:48:23,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680685341] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:23,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [369982300] [2022-12-14 12:48:23,812 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 12:48:23,812 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:48:23,816 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:48:23,821 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:48:23,822 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:48:24,150 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-12-14 12:48:24,161 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-12-14 12:48:24,163 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:48:24,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [369982300] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:48:24,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 12:48:24,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 7] total 21 [2022-12-14 12:48:24,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616387734] [2022-12-14 12:48:24,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:48:24,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 12:48:24,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:48:24,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 12:48:24,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-12-14 12:48:24,665 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 12:48:24,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:24,970 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2022-12-14 12:48:24,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 12:48:24,970 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 12:48:24,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:24,971 INFO L225 Difference]: With dead ends: 68 [2022-12-14 12:48:24,971 INFO L226 Difference]: Without dead ends: 50 [2022-12-14 12:48:24,971 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 12:48:24,972 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 12:48:24,972 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 12:48:24,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-14 12:48:24,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-12-14 12:48:24,988 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 12:48:24,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2022-12-14 12:48:24,989 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 27 [2022-12-14 12:48:24,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:24,990 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2022-12-14 12:48:24,990 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 12:48:24,990 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2022-12-14 12:48:24,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-14 12:48:24,991 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:24,991 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 12:48:24,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:48:25,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:48:25,192 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:48:25,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:25,193 INFO L85 PathProgramCache]: Analyzing trace with hash -202147981, now seen corresponding path program 1 times [2022-12-14 12:48:25,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:48:25,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137974251] [2022-12-14 12:48:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:25,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:48:25,216 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 12:48:25,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407762341] [2022-12-14 12:48:25,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:25,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:48:25,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:48:25,219 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:48:25,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 12:48:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:25,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 12:48:25,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:25,411 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-14 12:48:25,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:25,620 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 12:48:25,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:48:25,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137974251] [2022-12-14 12:48:25,621 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 12:48:25,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407762341] [2022-12-14 12:48:25,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407762341] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:25,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [697321796] [2022-12-14 12:48:25,623 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-12-14 12:48:25,623 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:48:25,623 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:48:25,623 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:48:25,623 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:48:27,221 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-12-14 12:48:27,224 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-12-14 12:48:27,225 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:48:27,782 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '916#(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 12:48:27,782 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:48:27,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 12:48:27,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2022-12-14 12:48:27,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446267070] [2022-12-14 12:48:27,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 12:48:27,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 12:48:27,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:48:27,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 12:48:27,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2022-12-14 12:48:27,784 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 7 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-12-14 12:48:30,150 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 12:48:32,159 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 12:48:32,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:32,360 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2022-12-14 12:48:32,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 12:48:32,361 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 7 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 44 [2022-12-14 12:48:32,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:32,363 INFO L225 Difference]: With dead ends: 77 [2022-12-14 12:48:32,363 INFO L226 Difference]: Without dead ends: 69 [2022-12-14 12:48:32,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2022-12-14 12:48:32,364 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 21 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:32,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 117 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 289 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2022-12-14 12:48:32,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-12-14 12:48:32,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2022-12-14 12:48:32,395 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 12:48:32,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2022-12-14 12:48:32,397 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 44 [2022-12-14 12:48:32,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:32,397 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2022-12-14 12:48:32,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 7 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-12-14 12:48:32,398 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2022-12-14 12:48:32,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 12:48:32,399 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:32,399 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 12:48:32,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 12:48:32,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:48:32,601 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:48:32,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:32,603 INFO L85 PathProgramCache]: Analyzing trace with hash -567180131, now seen corresponding path program 1 times [2022-12-14 12:48:32,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:48:32,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459180991] [2022-12-14 12:48:32,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:32,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:48:32,640 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 12:48:32,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1506444756] [2022-12-14 12:48:32,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:32,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:48:32,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:48:32,642 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:48:32,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 12:48:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:32,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-14 12:48:32,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:32,943 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 12:48:32,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:34,077 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 12:48:34,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:48:34,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459180991] [2022-12-14 12:48:34,078 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 12:48:34,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506444756] [2022-12-14 12:48:34,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506444756] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:34,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [711618489] [2022-12-14 12:48:34,080 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-12-14 12:48:34,080 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:48:34,081 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:48:34,081 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:48:34,081 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:48:35,524 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2022-12-14 12:48:35,555 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-12-14 12:48:35,556 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:48:37,169 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1464#(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 12:48:37,169 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:48:37,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 12:48:37,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2022-12-14 12:48:37,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545150941] [2022-12-14 12:48:37,169 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 12:48:37,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 12:48:37,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:48:37,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 12:48:37,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2022-12-14 12:48:37,172 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 12:48:39,681 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 12:48:39,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:39,968 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2022-12-14 12:48:39,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 12:48:39,969 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 12:48:39,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:39,970 INFO L225 Difference]: With dead ends: 75 [2022-12-14 12:48:39,970 INFO L226 Difference]: Without dead ends: 73 [2022-12-14 12:48:39,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 118 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2022-12-14 12:48:39,972 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 27 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:39,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 97 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 12:48:39,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-12-14 12:48:39,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2022-12-14 12:48:39,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 43 states have internal predecessors, (46), 21 states have call successors, (21), 9 states have call predecessors, (21), 9 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-12-14 12:48:39,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2022-12-14 12:48:39,988 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 51 [2022-12-14 12:48:39,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:39,989 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2022-12-14 12:48:39,989 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 12:48:39,989 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2022-12-14 12:48:39,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-14 12:48:39,990 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:39,990 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 12:48:39,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 12:48:40,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:48:40,191 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:48:40,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:40,193 INFO L85 PathProgramCache]: Analyzing trace with hash 166119996, now seen corresponding path program 1 times [2022-12-14 12:48:40,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:48:40,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351756236] [2022-12-14 12:48:40,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:40,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:48:40,215 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 12:48:40,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120692002] [2022-12-14 12:48:40,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:40,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:48:40,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:48:40,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:48:40,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46b69d0-3bc3-4537-bafe-91adad5fe4c4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 12:48:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:40,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-14 12:48:40,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:41,384 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 12:48:41,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:49:07,984 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~p~0#1| 4294967296)) (.cse1 (mod |c_ULTIMATE.start_main_~d~0#1| 4294967296))) (or (= .cse0 1) (not (= .cse1 (mod (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~B~0#1|) 4294967296))) (let ((.cse5 (div .cse1 2))) (let ((.cse2 (<= (mod .cse5 4294967296) (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (.cse6 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse4 (* |c_ULTIMATE.start_main_~B~0#1| |c_ULTIMATE.start_main_~q~0#1|))) (and (or (not .cse2) (let ((.cse3 (* |c_ULTIMATE.start_main_~B~0#1| (div .cse0 2)))) (let ((.cse7 (* (div (+ .cse3 (- .cse5) .cse4 |c_ULTIMATE.start_main_~r~0#1|) 4294967296) 4294967296))) (and (< (+ .cse3 .cse4 |c_ULTIMATE.start_main_~r~0#1|) (+ .cse5 .cse6 1 .cse7)) (< (+ .cse5 .cse6 .cse7) (+ .cse3 .cse4 |c_ULTIMATE.start_main_~r~0#1| 1)))))) (or .cse2 (let ((.cse9 (+ .cse4 |c_ULTIMATE.start_main_~r~0#1|))) (let ((.cse8 (* (div .cse9 4294967296) 4294967296))) (and (< (+ .cse6 .cse8) (+ .cse4 |c_ULTIMATE.start_main_~r~0#1| 1)) (< .cse9 (+ .cse6 1 .cse8))))))))))) is different from true [2022-12-14 12:50:53,064 WARN L233 SmtUtils]: Spent 27.34s on a formula simplification that was a NOOP. DAG size: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:53:12,824 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:53:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 35 proven. 19 refuted. 3 times theorem prover too weak. 82 trivial. 2 not checked. [2022-12-14 12:53:39,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:53:39,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351756236] [2022-12-14 12:53:39,975 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 12:53:39,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120692002] [2022-12-14 12:53:39,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120692002] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:53:39,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1355477266] [2022-12-14 12:53:39,977 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-12-14 12:53:39,977 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:53:39,978 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:53:39,978 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:53:39,978 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:53:43,575 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-12-14 12:53:43,578 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-12-14 12:53:43,579 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:54:17,545 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2095#(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 12:54:17,545 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:54:17,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 12:54:17,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2022-12-14 12:54:17,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441107055] [2022-12-14 12:54:17,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 12:54:17,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 12:54:17,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:54:17,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 12:54:17,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=838, Unknown=26, NotChecked=60, Total=1056 [2022-12-14 12:54:17,548 INFO L87 Difference]: Start difference. First operand 72 states and 87 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 12:54:19,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 12:54:21,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:54:23,949 WARN L539 Checker$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 12:54:26,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:54:27,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:54:29,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:54:31,858 WARN L539 Checker$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 12:54:34,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:54:37,336 WARN L539 Checker$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 12:54:39,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:54:41,941 WARN L539 Checker$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 12:54:45,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:54:46,877 WARN L539 Checker$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 12:54:49,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:54:54,363 WARN L539 Checker$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 12:54:56,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:55:00,544 WARN L539 Checker$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 12:55:03,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:55:05,254 WARN L539 Checker$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 12:55:07,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:55:10,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:55:12,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:55:15,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:55:59,279 WARN L233 SmtUtils]: Spent 42.51s on a formula simplification. DAG size of input: 77 DAG size of output: 67 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:56:02,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:56:06,499 WARN L539 Checker$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 12:56:08,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:56:10,772 WARN L539 Checker$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 12:57:08,810 WARN L233 SmtUtils]: Spent 52.64s on a formula simplification that was a NOOP. DAG size: 80 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:57:10,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:57:14,724 WARN L539 Checker$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 12:58:25,782 WARN L233 SmtUtils]: Spent 1.03m on a formula simplification that was a NOOP. DAG size: 78 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:58:26,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:58:28,928 WARN L539 Checker$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 12:58:30,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:58:32,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:58:33,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 12:58:35,402 WARN L539 Checker$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 12:59:56,327 WARN L233 SmtUtils]: Spent 1.29m on a formula simplification. DAG size of input: 79 DAG size of output: 78 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:59:58,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:00:00,669 WARN L539 Checker$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 13:00:02,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:00:37,586 WARN L233 SmtUtils]: Spent 28.52s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:00:39,592 WARN L539 Checker$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 13:00:41,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:01:04,085 WARN L233 SmtUtils]: Spent 20.68s on a formula simplification. DAG size of input: 58 DAG size of output: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:01:07,589 WARN L539 Checker$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 13:01:09,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:01:11,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:01:13,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:01:15,828 WARN L539 Checker$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 13:01:18,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:01:20,334 WARN L539 Checker$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 13:01:22,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:01:24,469 WARN L539 Checker$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 13:01:26,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:01:29,482 WARN L539 Checker$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 13:01:31,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:01:50,261 WARN L233 SmtUtils]: Spent 16.76s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:01:54,019 WARN L539 Checker$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 13:01:56,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:01:57,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:02:00,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:02:03,412 WARN L539 Checker$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 13:02:05,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:02:06,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:02:09,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:02:12,580 WARN L539 Checker$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 13:02:14,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:02:16,065 WARN L539 Checker$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 13:02:18,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:02:20,400 WARN L539 Checker$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 13:02:23,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:02:25,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:02:27,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:02:29,686 WARN L539 Checker$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 13:02:31,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:02:33,707 WARN L539 Checker$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 13:02:35,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:02:37,719 WARN L539 Checker$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 13:02:41,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:02:43,330 WARN L539 Checker$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 13:02:45,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:02:48,430 WARN L539 Checker$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 13:02:50,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:02:52,934 WARN L539 Checker$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 13:02:54,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:02:56,941 WARN L539 Checker$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 13:02:58,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:03:00,952 WARN L539 Checker$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 13:03:02,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:03:04,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:03:12,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:03:14,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []