./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V --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 26517bdd67184dea6352cf50b6d9992d41ecfd853675bfc685354b90b7b5bf40 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:07:43,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:07:43,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:07:44,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:07:44,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:07:44,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:07:44,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:07:44,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:07:44,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:07:44,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:07:44,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:07:44,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:07:44,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:07:44,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:07:44,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:07:44,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:07:44,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:07:44,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:07:44,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:07:44,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:07:44,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:07:44,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:07:44,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:07:44,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:07:44,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:07:44,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:07:44,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:07:44,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:07:44,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:07:44,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:07:44,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:07:44,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:07:44,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:07:44,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:07:44,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:07:44,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:07:44,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:07:44,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:07:44,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:07:44,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:07:44,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:07:44,122 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:07:44,176 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:07:44,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:07:44,177 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:07:44,177 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:07:44,179 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:07:44,179 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:07:44,179 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:07:44,180 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:07:44,180 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:07:44,180 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:07:44,182 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:07:44,182 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:07:44,182 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:07:44,183 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:07:44,183 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:07:44,183 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:07:44,184 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:07:44,184 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:07:44,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:07:44,185 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:07:44,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:07:44,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:07:44,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:07:44,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:07:44,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:07:44,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:07:44,189 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:07:44,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:07:44,190 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:07:44,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:07:44,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:07:44,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:07:44,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:07:44,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:07:44,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:07:44,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:07:44,192 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:07:44,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:07:44,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:07:44,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:07:44,194 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:07:44,194 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26517bdd67184dea6352cf50b6d9992d41ecfd853675bfc685354b90b7b5bf40 [2021-11-23 02:07:44,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:07:44,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:07:44,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:07:44,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:07:44,521 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:07:44,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound10.c [2021-11-23 02:07:44,622 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/data/423384657/d7383fc1aecc4d21b0e9db7dd0b2d44f/FLAG0b49275e1 [2021-11-23 02:07:45,243 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:07:45,244 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound10.c [2021-11-23 02:07:45,252 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/data/423384657/d7383fc1aecc4d21b0e9db7dd0b2d44f/FLAG0b49275e1 [2021-11-23 02:07:45,574 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/data/423384657/d7383fc1aecc4d21b0e9db7dd0b2d44f [2021-11-23 02:07:45,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:07:45,579 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:07:45,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:07:45,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:07:45,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:07:45,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:07:45" (1/1) ... [2021-11-23 02:07:45,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@610ce7c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45, skipping insertion in model container [2021-11-23 02:07:45,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:07:45" (1/1) ... [2021-11-23 02:07:45,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:07:45,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:07:45,836 WARN L230 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_5b26206a-5a6c-456e-bf8b-9e7c3189623a/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound10.c[525,538] [2021-11-23 02:07:45,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:07:45,884 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:07:45,899 WARN L230 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_5b26206a-5a6c-456e-bf8b-9e7c3189623a/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound10.c[525,538] [2021-11-23 02:07:45,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:07:45,936 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:07:45,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45 WrapperNode [2021-11-23 02:07:45,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:07:45,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:07:45,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:07:45,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:07:45,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (1/1) ... [2021-11-23 02:07:45,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (1/1) ... [2021-11-23 02:07:46,002 INFO L137 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2021-11-23 02:07:46,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:07:46,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:07:46,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:07:46,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:07:46,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (1/1) ... [2021-11-23 02:07:46,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (1/1) ... [2021-11-23 02:07:46,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (1/1) ... [2021-11-23 02:07:46,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (1/1) ... [2021-11-23 02:07:46,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (1/1) ... [2021-11-23 02:07:46,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (1/1) ... [2021-11-23 02:07:46,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (1/1) ... [2021-11-23 02:07:46,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:07:46,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:07:46,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:07:46,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:07:46,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (1/1) ... [2021-11-23 02:07:46,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:07:46,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:07:46,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:07:46,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:07:46,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:07:46,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:07:46,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:07:46,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:07:46,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:07:46,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:07:46,269 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:07:46,271 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:07:46,455 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:07:46,526 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:07:46,527 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 02:07:46,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:07:46 BoogieIcfgContainer [2021-11-23 02:07:46,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:07:46,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:07:46,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:07:46,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:07:46,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:07:45" (1/3) ... [2021-11-23 02:07:46,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518c394f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:07:46, skipping insertion in model container [2021-11-23 02:07:46,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (2/3) ... [2021-11-23 02:07:46,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518c394f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:07:46, skipping insertion in model container [2021-11-23 02:07:46,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:07:46" (3/3) ... [2021-11-23 02:07:46,554 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound10.c [2021-11-23 02:07:46,561 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:07:46,576 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:07:46,635 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:07:46,644 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:07:46,645 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:07:46,668 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 02:07:46,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 02:07:46,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:07:46,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:07:46,689 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:07:46,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:07:46,697 INFO L85 PathProgramCache]: Analyzing trace with hash -678335095, now seen corresponding path program 1 times [2021-11-23 02:07:46,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:07:46,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340314120] [2021-11-23 02:07:46,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:07:46,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:07:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:07:46,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:07:46,906 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:07:46,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340314120] [2021-11-23 02:07:46,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340314120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:07:46,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:07:46,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:07:46,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412177563] [2021-11-23 02:07:46,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:07:46,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:07:46,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:07:46,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:07:46,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:07:46,967 INFO L87 Difference]: Start difference. First operand has 24 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:07:47,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:07:47,011 INFO L93 Difference]: Finished difference Result 44 states and 78 transitions. [2021-11-23 02:07:47,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:07:47,015 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-23 02:07:47,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:07:47,025 INFO L225 Difference]: With dead ends: 44 [2021-11-23 02:07:47,025 INFO L226 Difference]: Without dead ends: 22 [2021-11-23 02:07:47,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:07:47,036 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:07:47,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:07:47,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-23 02:07:47,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-23 02:07:47,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:07:47,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 33 transitions. [2021-11-23 02:07:47,089 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 33 transitions. Word has length 7 [2021-11-23 02:07:47,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:07:47,090 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 33 transitions. [2021-11-23 02:07:47,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:07:47,091 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 33 transitions. [2021-11-23 02:07:47,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 02:07:47,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:07:47,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:07:47,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:07:47,102 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:07:47,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:07:47,104 INFO L85 PathProgramCache]: Analyzing trace with hash 520368722, now seen corresponding path program 1 times [2021-11-23 02:07:47,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:07:47,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240620418] [2021-11-23 02:07:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:07:47,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:07:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:07:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:07:47,180 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:07:47,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240620418] [2021-11-23 02:07:47,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240620418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:07:47,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:07:47,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:07:47,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39156550] [2021-11-23 02:07:47,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:07:47,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:07:47,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:07:47,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:07:47,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:07:47,186 INFO L87 Difference]: Start difference. First operand 22 states and 33 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:07:47,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:07:47,230 INFO L93 Difference]: Finished difference Result 42 states and 63 transitions. [2021-11-23 02:07:47,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:07:47,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 02:07:47,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:07:47,233 INFO L225 Difference]: With dead ends: 42 [2021-11-23 02:07:47,233 INFO L226 Difference]: Without dead ends: 24 [2021-11-23 02:07:47,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:07:47,237 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:07:47,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:07:47,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-23 02:07:47,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-23 02:07:47,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:07:47,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2021-11-23 02:07:47,250 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 35 transitions. Word has length 9 [2021-11-23 02:07:47,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:07:47,251 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 35 transitions. [2021-11-23 02:07:47,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:07:47,252 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 35 transitions. [2021-11-23 02:07:47,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 02:07:47,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:07:47,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:07:47,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:07:47,254 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:07:47,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:07:47,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1389535714, now seen corresponding path program 1 times [2021-11-23 02:07:47,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:07:47,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916994516] [2021-11-23 02:07:47,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:07:47,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:07:47,279 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:07:47,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372261506] [2021-11-23 02:07:47,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:07:47,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:07:47,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:07:47,283 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:07:47,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:07:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:07:47,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:07:47,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:07:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:07:47,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:07:47,580 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:07:47,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916994516] [2021-11-23 02:07:47,580 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:07:47,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372261506] [2021-11-23 02:07:47,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372261506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:07:47,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:07:47,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:07:47,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153510190] [2021-11-23 02:07:47,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:07:47,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:07:47,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:07:47,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:07:47,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:07:47,585 INFO L87 Difference]: Start difference. First operand 24 states and 35 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:07:49,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:49,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:07:49,666 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2021-11-23 02:07:49,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:07:49,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 02:07:49,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:07:49,760 INFO L225 Difference]: With dead ends: 37 [2021-11-23 02:07:49,761 INFO L226 Difference]: Without dead ends: 28 [2021-11-23 02:07:49,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:07:49,768 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:07:49,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 86 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 02:07:49,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-23 02:07:49,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-11-23 02:07:49,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:07:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2021-11-23 02:07:49,785 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 39 transitions. Word has length 10 [2021-11-23 02:07:49,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:07:49,785 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-11-23 02:07:49,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:07:49,786 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2021-11-23 02:07:49,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 02:07:49,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:07:49,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:07:49,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 02:07:49,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:07:49,988 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:07:49,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:07:49,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1388046164, now seen corresponding path program 1 times [2021-11-23 02:07:49,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:07:49,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950866015] [2021-11-23 02:07:49,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:07:49,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:07:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:07:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:07:50,368 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:07:50,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950866015] [2021-11-23 02:07:50,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950866015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:07:50,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:07:50,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:07:50,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041975575] [2021-11-23 02:07:50,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:07:50,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:07:50,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:07:50,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:07:50,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:07:50,378 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:08:02,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 12.44s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:08:05,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:07,252 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:09,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:11,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:13,563 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:14,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:14,176 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2021-11-23 02:08:14,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:08:14,177 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 02:08:14,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:14,179 INFO L225 Difference]: With dead ends: 55 [2021-11-23 02:08:14,179 INFO L226 Difference]: Without dead ends: 51 [2021-11-23 02:08:14,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:08:14,181 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 13 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 25 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:14,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 192 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 74 Invalid, 6 Unknown, 0 Unchecked, 23.7s Time] [2021-11-23 02:08:14,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-23 02:08:14,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2021-11-23 02:08:14,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 23 states have (on average 1.391304347826087) internal successors, (32), 25 states have internal predecessors, (32), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-23 02:08:14,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 74 transitions. [2021-11-23 02:08:14,205 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 74 transitions. Word has length 10 [2021-11-23 02:08:14,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:14,205 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 74 transitions. [2021-11-23 02:08:14,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:08:14,206 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 74 transitions. [2021-11-23 02:08:14,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 02:08:14,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:14,207 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:08:14,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:08:14,208 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:08:14,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:14,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1970023331, now seen corresponding path program 1 times [2021-11-23 02:08:14,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:14,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714024005] [2021-11-23 02:08:14,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:14,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:14,224 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:08:14,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055836131] [2021-11-23 02:08:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:14,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:08:14,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:08:14,240 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:08:14,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:08:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:14,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:08:14,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:08:14,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:14,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:08:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:14,475 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:14,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714024005] [2021-11-23 02:08:14,475 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:08:14,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055836131] [2021-11-23 02:08:14,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055836131] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:08:14,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [367651314] [2021-11-23 02:08:14,508 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 02:08:14,509 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:08:14,514 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:08:14,522 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:08:14,523 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:08:14,965 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 14 for LOIs [2021-11-23 02:08:14,977 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:08:15,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [367651314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:15,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:08:15,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4] total 15 [2021-11-23 02:08:15,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300319405] [2021-11-23 02:08:15,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:15,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:08:15,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:08:15,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:08:15,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:08:15,345 INFO L87 Difference]: Start difference. First operand 48 states and 74 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:08:17,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:17,141 INFO L93 Difference]: Finished difference Result 87 states and 135 transitions. [2021-11-23 02:08:17,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 02:08:17,148 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-23 02:08:17,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:17,150 INFO L225 Difference]: With dead ends: 87 [2021-11-23 02:08:17,151 INFO L226 Difference]: Without dead ends: 68 [2021-11-23 02:08:17,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:08:17,153 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 10 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:17,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 126 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 02:08:17,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-23 02:08:17,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2021-11-23 02:08:17,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 31 states have internal predecessors, (37), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-23 02:08:17,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2021-11-23 02:08:17,191 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 12 [2021-11-23 02:08:17,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:17,192 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2021-11-23 02:08:17,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:08:17,195 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2021-11-23 02:08:17,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:08:17,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:17,197 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:08:17,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:08:17,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:08:17,413 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:08:17,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:17,414 INFO L85 PathProgramCache]: Analyzing trace with hash 600084205, now seen corresponding path program 1 times [2021-11-23 02:08:17,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:17,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569092638] [2021-11-23 02:08:17,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:17,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:17,432 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:08:17,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1200611590] [2021-11-23 02:08:17,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:17,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:08:17,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:08:17,446 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:08:17,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:08:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:17,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:08:17,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:08:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:17,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:08:17,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:17,710 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:17,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569092638] [2021-11-23 02:08:17,710 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:08:17,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200611590] [2021-11-23 02:08:17,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200611590] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:08:17,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [749911500] [2021-11-23 02:08:17,716 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 02:08:17,716 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:08:17,716 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:08:17,717 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:08:17,717 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:08:18,024 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 16 for LOIs [2021-11-23 02:08:18,038 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:08:18,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [749911500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:18,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:08:18,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 5] total 17 [2021-11-23 02:08:18,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794195160] [2021-11-23 02:08:18,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:18,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:08:18,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:08:18,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:08:18,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-11-23 02:08:18,463 INFO L87 Difference]: Start difference. First operand 56 states and 82 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:08:21,992 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:24,153 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:24,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:24,523 INFO L93 Difference]: Finished difference Result 77 states and 114 transitions. [2021-11-23 02:08:24,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 02:08:24,525 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 02:08:24,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:24,526 INFO L225 Difference]: With dead ends: 77 [2021-11-23 02:08:24,527 INFO L226 Difference]: Without dead ends: 74 [2021-11-23 02:08:24,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-11-23 02:08:24,529 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 27 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:24,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 78 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 137 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-11-23 02:08:24,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-23 02:08:24,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 58. [2021-11-23 02:08:24,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 33 states have internal predecessors, (40), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-23 02:08:24,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 85 transitions. [2021-11-23 02:08:24,549 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 85 transitions. Word has length 13 [2021-11-23 02:08:24,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:24,549 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 85 transitions. [2021-11-23 02:08:24,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:08:24,550 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 85 transitions. [2021-11-23 02:08:24,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:08:24,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:24,551 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:08:24,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:08:24,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:08:24,776 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:08:24,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:24,777 INFO L85 PathProgramCache]: Analyzing trace with hash 601573755, now seen corresponding path program 1 times [2021-11-23 02:08:24,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:24,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210215009] [2021-11-23 02:08:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:24,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:25,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:25,114 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:25,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210215009] [2021-11-23 02:08:25,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210215009] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:08:25,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046349378] [2021-11-23 02:08:25,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:25,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:08:25,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:08:25,119 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:08:25,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:08:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:25,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:08:25,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:08:25,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:25,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:08:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:25,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046349378] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:08:25,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1804760686] [2021-11-23 02:08:25,708 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 02:08:25,708 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:08:25,708 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:08:25,709 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:08:25,709 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:08:25,968 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 27 for LOIs [2021-11-23 02:08:26,018 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:08:26,870 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1213#(and (<= 2 ~counter~0) (< ~counter~0 11) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 02:08:26,870 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:08:26,870 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:08:26,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2021-11-23 02:08:26,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393358695] [2021-11-23 02:08:26,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:08:26,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 02:08:26,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:08:26,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 02:08:26,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2021-11-23 02:08:26,872 INFO L87 Difference]: Start difference. First operand 58 states and 85 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 11 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:08:30,059 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:08:33,295 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:34,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:08:35,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:35,547 INFO L93 Difference]: Finished difference Result 105 states and 154 transitions. [2021-11-23 02:08:35,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 02:08:35,548 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 11 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 02:08:35,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:35,550 INFO L225 Difference]: With dead ends: 105 [2021-11-23 02:08:35,550 INFO L226 Difference]: Without dead ends: 65 [2021-11-23 02:08:35,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2021-11-23 02:08:35,553 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 34 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 91 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:35,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 392 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 216 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2021-11-23 02:08:35,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-23 02:08:35,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2021-11-23 02:08:35,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 32 states have (on average 1.21875) internal successors, (39), 34 states have internal predecessors, (39), 28 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-23 02:08:35,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 93 transitions. [2021-11-23 02:08:35,570 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 93 transitions. Word has length 13 [2021-11-23 02:08:35,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:35,571 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 93 transitions. [2021-11-23 02:08:35,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 11 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:08:35,572 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 93 transitions. [2021-11-23 02:08:35,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:08:35,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:35,573 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:08:35,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:08:35,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 02:08:35,788 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:08:35,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:35,789 INFO L85 PathProgramCache]: Analyzing trace with hash -339513844, now seen corresponding path program 1 times [2021-11-23 02:08:35,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:35,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969833020] [2021-11-23 02:08:35,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:35,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:35,798 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:08:35,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172770395] [2021-11-23 02:08:35,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:35,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:08:35,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:08:35,800 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:08:35,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:08:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:35,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:08:35,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:08:36,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 02:08:36,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:08:36,059 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:36,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969833020] [2021-11-23 02:08:36,060 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:08:36,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172770395] [2021-11-23 02:08:36,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172770395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:36,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:08:36,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:08:36,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548495784] [2021-11-23 02:08:36,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:36,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:08:36,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:08:36,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:08:36,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:08:36,062 INFO L87 Difference]: Start difference. First operand 64 states and 93 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:08:36,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:36,991 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2021-11-23 02:08:36,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:08:36,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-11-23 02:08:36,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:36,994 INFO L225 Difference]: With dead ends: 75 [2021-11-23 02:08:36,994 INFO L226 Difference]: Without dead ends: 51 [2021-11-23 02:08:36,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:08:36,995 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:36,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 109 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 02:08:36,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-23 02:08:37,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-23 02:08:37,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 28 states have internal predecessors, (32), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-23 02:08:37,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 74 transitions. [2021-11-23 02:08:37,016 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 74 transitions. Word has length 20 [2021-11-23 02:08:37,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:37,017 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 74 transitions. [2021-11-23 02:08:37,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:08:37,018 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 74 transitions. [2021-11-23 02:08:37,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 02:08:37,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:37,019 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:08:37,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-23 02:08:37,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-23 02:08:37,220 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:08:37,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:37,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1744099301, now seen corresponding path program 1 times [2021-11-23 02:08:37,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:37,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149497165] [2021-11-23 02:08:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:37,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:37,233 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:08:37,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730359135] [2021-11-23 02:08:37,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:37,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:08:37,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:08:37,257 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:08:37,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:08:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:37,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:08:37,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:08:37,530 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 02:08:37,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:08:37,531 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:37,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149497165] [2021-11-23 02:08:37,531 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:08:37,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730359135] [2021-11-23 02:08:37,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730359135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:37,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:08:37,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:08:37,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527750425] [2021-11-23 02:08:37,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:37,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:08:37,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:08:37,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:08:37,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:08:37,533 INFO L87 Difference]: Start difference. First operand 51 states and 74 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:08:39,791 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:40,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:40,771 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2021-11-23 02:08:40,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:08:40,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-11-23 02:08:40,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:40,773 INFO L225 Difference]: With dead ends: 61 [2021-11-23 02:08:40,773 INFO L226 Difference]: Without dead ends: 58 [2021-11-23 02:08:40,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:08:40,775 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:40,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 120 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2021-11-23 02:08:40,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-23 02:08:40,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2021-11-23 02:08:40,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 02:08:40,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2021-11-23 02:08:40,786 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 23 [2021-11-23 02:08:40,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:40,786 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2021-11-23 02:08:40,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:08:40,787 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2021-11-23 02:08:40,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 02:08:40,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:40,789 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:08:40,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:08:40,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:08:40,997 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:08:40,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:40,997 INFO L85 PathProgramCache]: Analyzing trace with hash -787687870, now seen corresponding path program 1 times [2021-11-23 02:08:40,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:40,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817875150] [2021-11-23 02:08:40,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:40,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:41,021 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:08:41,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591601884] [2021-11-23 02:08:41,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:41,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:08:41,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:08:41,041 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:08:41,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 02:08:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:41,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:08:41,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:08:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-23 02:08:41,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:08:41,529 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-23 02:08:41,530 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:41,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817875150] [2021-11-23 02:08:41,530 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:08:41,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591601884] [2021-11-23 02:08:41,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591601884] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:08:41,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2114989013] [2021-11-23 02:08:41,534 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-23 02:08:41,534 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:08:41,534 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:08:41,534 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:08:41,535 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:12:16,362 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 40 for LOIs [2021-11-23 02:12:16,475 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:12:18,821 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (<= 2 c_~counter~0)) (.cse1 (<= 0 |c_#NULL.base|)) (.cse52 (<= |c_#NULL.offset| 0)) (.cse61 (<= 1 c_~counter~0)) (.cse53 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|)) (.cse54 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse55 (<= |c_#NULL.base| 0)) (.cse56 (<= c_~counter~0 11)) (.cse57 (<= 0 |c_#NULL.offset|)) (.cse58 (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (.cse59 (<= 0 |c_#StackHeapBarrier|)) (.cse60 (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (and (or (and .cse0 .cse1 (exists ((|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| Int) (|aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| Int)) (let ((.cse3 (* 4 |c_ULTIMATE.start_main_~q~0#1|)) (.cse2 (+ (* 4294967296 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|))) (and (< .cse2 (+ .cse3 4)) (<= 0 .cse2) (let ((.cse31 (div (mod (+ (* |c_ULTIMATE.start_main_~q~0#1| 4294967295) |c_ULTIMATE.start_main_~h~0#1|) 4294967296) 2)) (.cse18 (<= |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~h~0#1|)) (.cse19 (<= |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse17 (<= 3 c_~counter~0)) (.cse30 (mod (+ (* |c_ULTIMATE.start_main_~q~0#1| 4294967294) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| (* |c_ULTIMATE.start_main_~h~0#1| 2)) 4294967296)) (.cse4 (mod |c_ULTIMATE.start_main_~h~0#1| 4294967296))) (or (let ((.cse5 (mod (+ |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|) 4294967296))) (and (<= .cse4 .cse5) (let ((.cse6 (not (= (ite (< .cse5 .cse30) 1 0) 0)))) (or (and .cse6 (exists ((|v_ULTIMATE.start_main_~h~0#1_30| Int) (|aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| Int)) (let ((.cse16 (* |v_ULTIMATE.start_main_~h~0#1_30| 4)) (.cse9 (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 4294967296) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4294967296) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|)) (.cse12 (+ |c_ULTIMATE.start_main_~h~0#1| (* |c_ULTIMATE.start_main_~q~0#1| (- 1))))) (let ((.cse8 (* .cse12 .cse12)) (.cse7 (* |c_ULTIMATE.start_main_~n~0#1| .cse9)) (.cse15 (* .cse16 |c_ULTIMATE.start_main_~n~0#1|)) (.cse13 (* (+ (* |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~q~0#1| (- 4))) .cse9)) (.cse10 (+ |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (.cse14 (* |v_ULTIMATE.start_main_~h~0#1_30| |v_ULTIMATE.start_main_~h~0#1_30|))) (and (not (= (ite (= (mod (+ (* .cse7 4294967295) .cse8 (* .cse9 .cse10)) 4294967296) 0) 1 0) 0)) (not (= (ite (= 0 (mod (let ((.cse11 (* |v_ULTIMATE.start_main_~h~0#1_30| 12))) (+ (* (* .cse11 .cse9) .cse10) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) .cse12) .cse9) (* (* (* |v_ULTIMATE.start_main_~h~0#1_30| .cse9) .cse9) 4294967295) (* (* .cse13 .cse9) 4294967295) (* (* (* .cse11 |c_ULTIMATE.start_main_~n~0#1|) .cse9) 4294967295) (* .cse14 |v_ULTIMATE.start_main_~h~0#1_30|) (* (* (* (+ (* |c_ULTIMATE.start_main_~q~0#1| (- 16)) (* |c_ULTIMATE.start_main_~h~0#1| 16)) .cse9) .cse10) 4294967295))) 4294967296)) 1 0) 0)) (not (= (ite (= (mod .cse7 4294967296) (mod (+ .cse8 (* .cse10 .cse9)) 4294967296)) 1 0) 0)) (not (= (ite (= (mod (+ (* (* (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 17179869184) (* |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 17179869184)) .cse10) .cse10) (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) .cse9) (* (* .cse15 .cse12) 4294967295) (* .cse14 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse16 .cse12) .cse10) (* (* .cse7 .cse9) 4294967295) (* (* .cse14 .cse10) 4294967295) (* (* (* (* |c_ULTIMATE.start_main_~n~0#1| 8) .cse9) .cse10) 4294967295) (* (* .cse9 .cse9) .cse10)) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod (+ (* (* .cse16 .cse9) .cse10) (* (* .cse15 .cse9) 4294967295) (* (* (* .cse12 .cse9) .cse9) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) .cse12) .cse9) (* (* .cse13 .cse10) 4294967295) (* .cse14 .cse12)) 4294967296) 0) 1 0) 0)))))) .cse17) (and .cse18 .cse6 .cse19 (exists ((|v_ULTIMATE.start_main_~h~0#1_30| Int) (|aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| Int)) (let ((.cse29 (* |v_ULTIMATE.start_main_~h~0#1_30| 4)) (.cse22 (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 4294967296) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4294967296) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|)) (.cse25 (+ |c_ULTIMATE.start_main_~h~0#1| (* |c_ULTIMATE.start_main_~q~0#1| (- 1))))) (let ((.cse21 (* .cse25 .cse25)) (.cse20 (* |c_ULTIMATE.start_main_~n~0#1| .cse22)) (.cse28 (* .cse29 |c_ULTIMATE.start_main_~n~0#1|)) (.cse26 (* (+ (* |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~q~0#1| (- 4))) .cse22)) (.cse23 (+ |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (.cse27 (* |v_ULTIMATE.start_main_~h~0#1_30| |v_ULTIMATE.start_main_~h~0#1_30|))) (and (not (= (ite (= (mod (+ (* .cse20 4294967295) .cse21 (* .cse22 .cse23)) 4294967296) 0) 1 0) 0)) (not (= (ite (= 0 (mod (let ((.cse24 (* |v_ULTIMATE.start_main_~h~0#1_30| 12))) (+ (* (* .cse24 .cse22) .cse23) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) .cse25) .cse22) (* (* (* |v_ULTIMATE.start_main_~h~0#1_30| .cse22) .cse22) 4294967295) (* (* .cse26 .cse22) 4294967295) (* (* (* .cse24 |c_ULTIMATE.start_main_~n~0#1|) .cse22) 4294967295) (* .cse27 |v_ULTIMATE.start_main_~h~0#1_30|) (* (* (* (+ (* |c_ULTIMATE.start_main_~q~0#1| (- 16)) (* |c_ULTIMATE.start_main_~h~0#1| 16)) .cse22) .cse23) 4294967295))) 4294967296)) 1 0) 0)) (not (= (ite (= (mod .cse20 4294967296) (mod (+ .cse21 (* .cse23 .cse22)) 4294967296)) 1 0) 0)) (<= |v_ULTIMATE.start_main_~h~0#1_30| 0) (not (= (ite (= (mod (+ (* (* (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 17179869184) (* |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 17179869184)) .cse23) .cse23) (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) .cse22) (* (* .cse28 .cse25) 4294967295) (* .cse27 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse29 .cse25) .cse23) (* (* .cse20 .cse22) 4294967295) (* (* .cse27 .cse23) 4294967295) (* (* (* (* |c_ULTIMATE.start_main_~n~0#1| 8) .cse22) .cse23) 4294967295) (* (* .cse22 .cse22) .cse23)) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod (+ (* (* .cse29 .cse22) .cse23) (* (* .cse28 .cse22) 4294967295) (* (* (* .cse25 .cse22) .cse22) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) .cse25) .cse22) (* (* .cse26 .cse23) 4294967295) (* .cse27 .cse25)) 4294967296) 0) 1 0) 0)) (<= 0 |v_ULTIMATE.start_main_~h~0#1_30|)))))))) (= (+ .cse31 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~p~0#1|))) (let ((.cse51 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (and (= .cse31 |c_ULTIMATE.start_main_~p~0#1|) (let ((.cse41 (not (= (ite (< .cse51 .cse30) 1 0) 0)))) (or (and .cse18 .cse19 (exists ((|v_ULTIMATE.start_main_~h~0#1_30| Int) (|aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| Int)) (let ((.cse35 (+ |c_ULTIMATE.start_main_~h~0#1| (* |c_ULTIMATE.start_main_~q~0#1| (- 1)))) (.cse33 (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 4294967296) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4294967296) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|)) (.cse32 (* |v_ULTIMATE.start_main_~h~0#1_30| 4))) (let ((.cse34 (* .cse32 |c_ULTIMATE.start_main_~n~0#1|)) (.cse36 (* (+ (* |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~q~0#1| (- 4))) .cse33)) (.cse37 (* |v_ULTIMATE.start_main_~h~0#1_30| |v_ULTIMATE.start_main_~h~0#1_30|)) (.cse38 (* |c_ULTIMATE.start_main_~n~0#1| .cse33)) (.cse39 (* .cse35 .cse35))) (and (not (= (ite (= (mod (+ (* (* .cse32 .cse33) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse34 .cse33) 4294967295) (* (* (* .cse35 .cse33) .cse33) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) .cse35) .cse33) (* (* .cse36 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* .cse37 .cse35)) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod (+ (* (* .cse32 .cse35) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse37 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) .cse33) (* (* .cse33 .cse33) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse34 .cse35) 4294967295) (* .cse37 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse38 .cse33) 4294967295) (* (* (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 17179869184) (* |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 17179869184)) |c_ULTIMATE.start_main_~r~0#1|) |c_ULTIMATE.start_main_~r~0#1|) (* (* (* (* |c_ULTIMATE.start_main_~n~0#1| 8) .cse33) |c_ULTIMATE.start_main_~r~0#1|) 4294967295)) 4294967296) 0) 1 0) 0)) (not (= 0 (ite (= (mod (+ (* .cse38 4294967295) .cse39 (* .cse33 |c_ULTIMATE.start_main_~r~0#1|)) 4294967296) 0) 1 0))) (not (= (ite (= (mod (let ((.cse40 (* |v_ULTIMATE.start_main_~h~0#1_30| 12))) (+ (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) .cse35) .cse33) (* (* (* |v_ULTIMATE.start_main_~h~0#1_30| .cse33) .cse33) 4294967295) (* (* (* (+ (* |c_ULTIMATE.start_main_~q~0#1| (- 16)) (* |c_ULTIMATE.start_main_~h~0#1| 16)) .cse33) |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* .cse36 .cse33) 4294967295) (* (* (* .cse40 |c_ULTIMATE.start_main_~n~0#1|) .cse33) 4294967295) (* (* .cse40 .cse33) |c_ULTIMATE.start_main_~r~0#1|) (* .cse37 |v_ULTIMATE.start_main_~h~0#1_30|))) 4294967296) 0) 1 0) 0)) (<= |v_ULTIMATE.start_main_~h~0#1_30| 0) (not (= (ite (= (mod .cse38 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~r~0#1| .cse33) .cse39) 4294967296)) 1 0) 0)) (<= 0 |v_ULTIMATE.start_main_~h~0#1_30|))))) .cse41) (and (exists ((|v_ULTIMATE.start_main_~h~0#1_30| Int) (|aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| Int)) (let ((.cse45 (+ |c_ULTIMATE.start_main_~h~0#1| (* |c_ULTIMATE.start_main_~q~0#1| (- 1)))) (.cse43 (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 4294967296) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4294967296) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|)) (.cse42 (* |v_ULTIMATE.start_main_~h~0#1_30| 4))) (let ((.cse44 (* .cse42 |c_ULTIMATE.start_main_~n~0#1|)) (.cse46 (* (+ (* |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~q~0#1| (- 4))) .cse43)) (.cse47 (* |v_ULTIMATE.start_main_~h~0#1_30| |v_ULTIMATE.start_main_~h~0#1_30|)) (.cse48 (* |c_ULTIMATE.start_main_~n~0#1| .cse43)) (.cse49 (* .cse45 .cse45))) (and (not (= (ite (= (mod (+ (* (* .cse42 .cse43) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse44 .cse43) 4294967295) (* (* (* .cse45 .cse43) .cse43) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) .cse45) .cse43) (* (* .cse46 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* .cse47 .cse45)) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod (+ (* (* .cse42 .cse45) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse47 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) .cse43) (* (* .cse43 .cse43) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse44 .cse45) 4294967295) (* .cse47 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse48 .cse43) 4294967295) (* (* (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 17179869184) (* |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 17179869184)) |c_ULTIMATE.start_main_~r~0#1|) |c_ULTIMATE.start_main_~r~0#1|) (* (* (* (* |c_ULTIMATE.start_main_~n~0#1| 8) .cse43) |c_ULTIMATE.start_main_~r~0#1|) 4294967295)) 4294967296) 0) 1 0) 0)) (not (= 0 (ite (= (mod (+ (* .cse48 4294967295) .cse49 (* .cse43 |c_ULTIMATE.start_main_~r~0#1|)) 4294967296) 0) 1 0))) (not (= (ite (= (mod (let ((.cse50 (* |v_ULTIMATE.start_main_~h~0#1_30| 12))) (+ (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) .cse45) .cse43) (* (* (* |v_ULTIMATE.start_main_~h~0#1_30| .cse43) .cse43) 4294967295) (* (* (* (+ (* |c_ULTIMATE.start_main_~q~0#1| (- 16)) (* |c_ULTIMATE.start_main_~h~0#1| 16)) .cse43) |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* .cse46 .cse43) 4294967295) (* (* (* .cse50 |c_ULTIMATE.start_main_~n~0#1|) .cse43) 4294967295) (* (* .cse50 .cse43) |c_ULTIMATE.start_main_~r~0#1|) (* .cse47 |v_ULTIMATE.start_main_~h~0#1_30|))) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod .cse48 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~r~0#1| .cse43) .cse49) 4294967296)) 1 0) 0)))))) .cse41 .cse17))) (< .cse51 .cse4))))) (<= .cse3 .cse2) (<= 0 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|) (< |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4294967296) (not (= |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 1)) (< .cse2 4294967296)))) .cse52 .cse53 .cse54 .cse55 .cse56 .cse57 .cse58 .cse59 .cse60) (and (< c_~counter~0 11) (= |c_ULTIMATE.start_main_~p~0#1| 0) (= |c_ULTIMATE.start_main_~h~0#1| 0) .cse61 .cse53 .cse54 (= |c_#NULL.offset| 0) (< (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296) (mod |c_ULTIMATE.start_main_~q~0#1| 4294967296)) .cse58 .cse59 .cse60 (= |c_#NULL.base| 0))) (or (and .cse0 .cse1 .cse52 .cse53 .cse54 .cse55 .cse56 .cse57 .cse58 .cse59 .cse60) (and (<= 0 |c_ULTIMATE.start_main_~h~0#1|) .cse1 (<= |c_ULTIMATE.start_main_~p~0#1| 0) (<= |c_ULTIMATE.start_main_~h~0#1| 0) .cse52 (<= 0 |c_ULTIMATE.start_main_~p~0#1|) .cse61 .cse53 .cse54 .cse55 .cse56 .cse57 .cse58 .cse59 .cse60)))) is different from false [2021-11-23 02:12:20,963 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse62 (<= 1 |c_ULTIMATE.start_main_#t~post6#1|)) (.cse0 (<= 0 |c_#NULL.base|)) (.cse2 (<= 2 |c_ULTIMATE.start_main_#t~post6#1|)) (.cse3 (<= |c_#NULL.offset| 0)) (.cse4 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|)) (.cse5 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse6 (<= |c_#NULL.base| 0)) (.cse57 (<= 0 |c_#NULL.offset|)) (.cse58 (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (.cse59 (<= 0 |c_#StackHeapBarrier|)) (.cse60 (<= |c_ULTIMATE.start_main_#t~post6#1| 11)) (.cse61 (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (and (let ((.cse1 (= c_~counter~0 (+ |c_ULTIMATE.start_main_#t~post6#1| 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (exists ((|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| Int) (|aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| Int)) (let ((.cse8 (* 4 |c_ULTIMATE.start_main_~q~0#1|)) (.cse7 (+ (* 4294967296 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|))) (and (< .cse7 (+ .cse8 4)) (<= 0 .cse7) (<= .cse8 .cse7) (<= 0 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|) (< |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4294967296) (let ((.cse11 (mod |c_ULTIMATE.start_main_~h~0#1| 4294967296)) (.cse23 (<= |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~h~0#1|)) (.cse24 (<= |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse22 (<= 3 |c_ULTIMATE.start_main_#t~post6#1|)) (.cse34 (mod (+ (* |c_ULTIMATE.start_main_~q~0#1| 4294967294) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| (* |c_ULTIMATE.start_main_~h~0#1| 2)) 4294967296)) (.cse9 (div (mod (+ (* |c_ULTIMATE.start_main_~q~0#1| 4294967295) |c_ULTIMATE.start_main_~h~0#1|) 4294967296) 2))) (or (let ((.cse10 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (and (= .cse9 |c_ULTIMATE.start_main_~p~0#1|) (< .cse10 .cse11) (let ((.cse21 (not (= (ite (< .cse10 .cse34) 1 0) 0)))) (or (and (exists ((|v_ULTIMATE.start_main_~h~0#1_30| Int) (|aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| Int)) (let ((.cse15 (+ |c_ULTIMATE.start_main_~h~0#1| (* |c_ULTIMATE.start_main_~q~0#1| (- 1)))) (.cse13 (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 4294967296) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4294967296) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|)) (.cse12 (* |v_ULTIMATE.start_main_~h~0#1_30| 4))) (let ((.cse14 (* .cse12 |c_ULTIMATE.start_main_~n~0#1|)) (.cse16 (* (+ (* |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~q~0#1| (- 4))) .cse13)) (.cse17 (* |v_ULTIMATE.start_main_~h~0#1_30| |v_ULTIMATE.start_main_~h~0#1_30|)) (.cse18 (* |c_ULTIMATE.start_main_~n~0#1| .cse13)) (.cse19 (* .cse15 .cse15))) (and (not (= (ite (= (mod (+ (* (* .cse12 .cse13) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse14 .cse13) 4294967295) (* (* (* .cse15 .cse13) .cse13) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) .cse15) .cse13) (* (* .cse16 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* .cse17 .cse15)) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod (+ (* (* .cse12 .cse15) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse17 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) .cse13) (* (* .cse13 .cse13) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse14 .cse15) 4294967295) (* .cse17 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse18 .cse13) 4294967295) (* (* (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 17179869184) (* |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 17179869184)) |c_ULTIMATE.start_main_~r~0#1|) |c_ULTIMATE.start_main_~r~0#1|) (* (* (* (* |c_ULTIMATE.start_main_~n~0#1| 8) .cse13) |c_ULTIMATE.start_main_~r~0#1|) 4294967295)) 4294967296) 0) 1 0) 0)) (not (= 0 (ite (= (mod (+ (* .cse18 4294967295) .cse19 (* .cse13 |c_ULTIMATE.start_main_~r~0#1|)) 4294967296) 0) 1 0))) (not (= (ite (= (mod (let ((.cse20 (* |v_ULTIMATE.start_main_~h~0#1_30| 12))) (+ (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) .cse15) .cse13) (* (* (* |v_ULTIMATE.start_main_~h~0#1_30| .cse13) .cse13) 4294967295) (* (* (* (+ (* |c_ULTIMATE.start_main_~q~0#1| (- 16)) (* |c_ULTIMATE.start_main_~h~0#1| 16)) .cse13) |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* .cse16 .cse13) 4294967295) (* (* (* .cse20 |c_ULTIMATE.start_main_~n~0#1|) .cse13) 4294967295) (* (* .cse20 .cse13) |c_ULTIMATE.start_main_~r~0#1|) (* .cse17 |v_ULTIMATE.start_main_~h~0#1_30|))) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod .cse18 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~r~0#1| .cse13) .cse19) 4294967296)) 1 0) 0)))))) .cse21 .cse22) (and .cse23 .cse24 (exists ((|v_ULTIMATE.start_main_~h~0#1_30| Int) (|aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| Int)) (let ((.cse28 (+ |c_ULTIMATE.start_main_~h~0#1| (* |c_ULTIMATE.start_main_~q~0#1| (- 1)))) (.cse26 (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 4294967296) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4294967296) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|)) (.cse25 (* |v_ULTIMATE.start_main_~h~0#1_30| 4))) (let ((.cse27 (* .cse25 |c_ULTIMATE.start_main_~n~0#1|)) (.cse29 (* (+ (* |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~q~0#1| (- 4))) .cse26)) (.cse30 (* |v_ULTIMATE.start_main_~h~0#1_30| |v_ULTIMATE.start_main_~h~0#1_30|)) (.cse31 (* |c_ULTIMATE.start_main_~n~0#1| .cse26)) (.cse32 (* .cse28 .cse28))) (and (not (= (ite (= (mod (+ (* (* .cse25 .cse26) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse27 .cse26) 4294967295) (* (* (* .cse28 .cse26) .cse26) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) .cse28) .cse26) (* (* .cse29 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* .cse30 .cse28)) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod (+ (* (* .cse25 .cse28) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse30 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) .cse26) (* (* .cse26 .cse26) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse27 .cse28) 4294967295) (* .cse30 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse31 .cse26) 4294967295) (* (* (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 17179869184) (* |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 17179869184)) |c_ULTIMATE.start_main_~r~0#1|) |c_ULTIMATE.start_main_~r~0#1|) (* (* (* (* |c_ULTIMATE.start_main_~n~0#1| 8) .cse26) |c_ULTIMATE.start_main_~r~0#1|) 4294967295)) 4294967296) 0) 1 0) 0)) (not (= 0 (ite (= (mod (+ (* .cse31 4294967295) .cse32 (* .cse26 |c_ULTIMATE.start_main_~r~0#1|)) 4294967296) 0) 1 0))) (not (= (ite (= (mod (let ((.cse33 (* |v_ULTIMATE.start_main_~h~0#1_30| 12))) (+ (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) .cse28) .cse26) (* (* (* |v_ULTIMATE.start_main_~h~0#1_30| .cse26) .cse26) 4294967295) (* (* (* (+ (* |c_ULTIMATE.start_main_~q~0#1| (- 16)) (* |c_ULTIMATE.start_main_~h~0#1| 16)) .cse26) |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* .cse29 .cse26) 4294967295) (* (* (* .cse33 |c_ULTIMATE.start_main_~n~0#1|) .cse26) 4294967295) (* (* .cse33 .cse26) |c_ULTIMATE.start_main_~r~0#1|) (* .cse30 |v_ULTIMATE.start_main_~h~0#1_30|))) 4294967296) 0) 1 0) 0)) (<= |v_ULTIMATE.start_main_~h~0#1_30| 0) (not (= (ite (= (mod .cse31 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~r~0#1| .cse26) .cse32) 4294967296)) 1 0) 0)) (<= 0 |v_ULTIMATE.start_main_~h~0#1_30|))))) .cse21))))) (let ((.cse35 (mod (+ |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|) 4294967296))) (and (<= .cse11 .cse35) (let ((.cse36 (not (= (ite (< .cse35 .cse34) 1 0) 0)))) (or (and .cse23 .cse36 .cse24 (exists ((|v_ULTIMATE.start_main_~h~0#1_30| Int) (|aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| Int)) (let ((.cse46 (* |v_ULTIMATE.start_main_~h~0#1_30| 4)) (.cse39 (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 4294967296) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4294967296) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|)) (.cse42 (+ |c_ULTIMATE.start_main_~h~0#1| (* |c_ULTIMATE.start_main_~q~0#1| (- 1))))) (let ((.cse38 (* .cse42 .cse42)) (.cse37 (* |c_ULTIMATE.start_main_~n~0#1| .cse39)) (.cse45 (* .cse46 |c_ULTIMATE.start_main_~n~0#1|)) (.cse43 (* (+ (* |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~q~0#1| (- 4))) .cse39)) (.cse40 (+ |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (.cse44 (* |v_ULTIMATE.start_main_~h~0#1_30| |v_ULTIMATE.start_main_~h~0#1_30|))) (and (not (= (ite (= (mod (+ (* .cse37 4294967295) .cse38 (* .cse39 .cse40)) 4294967296) 0) 1 0) 0)) (not (= (ite (= 0 (mod (let ((.cse41 (* |v_ULTIMATE.start_main_~h~0#1_30| 12))) (+ (* (* .cse41 .cse39) .cse40) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) .cse42) .cse39) (* (* (* |v_ULTIMATE.start_main_~h~0#1_30| .cse39) .cse39) 4294967295) (* (* .cse43 .cse39) 4294967295) (* (* (* .cse41 |c_ULTIMATE.start_main_~n~0#1|) .cse39) 4294967295) (* .cse44 |v_ULTIMATE.start_main_~h~0#1_30|) (* (* (* (+ (* |c_ULTIMATE.start_main_~q~0#1| (- 16)) (* |c_ULTIMATE.start_main_~h~0#1| 16)) .cse39) .cse40) 4294967295))) 4294967296)) 1 0) 0)) (not (= (ite (= (mod .cse37 4294967296) (mod (+ .cse38 (* .cse40 .cse39)) 4294967296)) 1 0) 0)) (<= |v_ULTIMATE.start_main_~h~0#1_30| 0) (not (= (ite (= (mod (+ (* (* (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 17179869184) (* |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 17179869184)) .cse40) .cse40) (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) .cse39) (* (* .cse45 .cse42) 4294967295) (* .cse44 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse46 .cse42) .cse40) (* (* .cse37 .cse39) 4294967295) (* (* .cse44 .cse40) 4294967295) (* (* (* (* |c_ULTIMATE.start_main_~n~0#1| 8) .cse39) .cse40) 4294967295) (* (* .cse39 .cse39) .cse40)) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod (+ (* (* .cse46 .cse39) .cse40) (* (* .cse45 .cse39) 4294967295) (* (* (* .cse42 .cse39) .cse39) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) .cse42) .cse39) (* (* .cse43 .cse40) 4294967295) (* .cse44 .cse42)) 4294967296) 0) 1 0) 0)) (<= 0 |v_ULTIMATE.start_main_~h~0#1_30|)))))) (and .cse36 .cse22 (exists ((|v_ULTIMATE.start_main_~h~0#1_30| Int) (|aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| Int)) (let ((.cse56 (* |v_ULTIMATE.start_main_~h~0#1_30| 4)) (.cse49 (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 4294967296) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4294967296) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111|)) (.cse52 (+ |c_ULTIMATE.start_main_~h~0#1| (* |c_ULTIMATE.start_main_~q~0#1| (- 1))))) (let ((.cse48 (* .cse52 .cse52)) (.cse47 (* |c_ULTIMATE.start_main_~n~0#1| .cse49)) (.cse55 (* .cse56 |c_ULTIMATE.start_main_~n~0#1|)) (.cse53 (* (+ (* |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~q~0#1| (- 4))) .cse49)) (.cse50 (+ |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (.cse54 (* |v_ULTIMATE.start_main_~h~0#1_30| |v_ULTIMATE.start_main_~h~0#1_30|))) (and (not (= (ite (= (mod (+ (* .cse47 4294967295) .cse48 (* .cse49 .cse50)) 4294967296) 0) 1 0) 0)) (not (= (ite (= 0 (mod (let ((.cse51 (* |v_ULTIMATE.start_main_~h~0#1_30| 12))) (+ (* (* .cse51 .cse49) .cse50) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) .cse52) .cse49) (* (* (* |v_ULTIMATE.start_main_~h~0#1_30| .cse49) .cse49) 4294967295) (* (* .cse53 .cse49) 4294967295) (* (* (* .cse51 |c_ULTIMATE.start_main_~n~0#1|) .cse49) 4294967295) (* .cse54 |v_ULTIMATE.start_main_~h~0#1_30|) (* (* (* (+ (* |c_ULTIMATE.start_main_~q~0#1| (- 16)) (* |c_ULTIMATE.start_main_~h~0#1| 16)) .cse49) .cse50) 4294967295))) 4294967296)) 1 0) 0)) (not (= (ite (= (mod .cse47 4294967296) (mod (+ .cse48 (* .cse50 .cse49)) 4294967296)) 1 0) 0)) (not (= (ite (= (mod (+ (* (* (+ (* |aux_div_v_ULTIMATE.start_main_~q~0#1_55_50| 17179869184) (* |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 4) (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 17179869184)) .cse50) .cse50) (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) .cse49) (* (* .cse55 .cse52) 4294967295) (* .cse54 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse56 .cse52) .cse50) (* (* .cse47 .cse49) 4294967295) (* (* .cse54 .cse50) 4294967295) (* (* (* (* |c_ULTIMATE.start_main_~n~0#1| 8) .cse49) .cse50) 4294967295) (* (* .cse49 .cse49) .cse50)) 4294967296) 0) 1 0) 0)) (not (= (ite (= (mod (+ (* (* .cse56 .cse49) .cse50) (* (* .cse55 .cse49) 4294967295) (* (* (* .cse52 .cse49) .cse49) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) .cse52) .cse49) (* (* .cse53 .cse50) 4294967295) (* .cse54 .cse52)) 4294967296) 0) 1 0) 0))))))))) (= (+ .cse9 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~p~0#1|))))) (not (= |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~q~0#1_55_50_52_111| 1)) (< .cse7 4294967296)))) .cse57 .cse58 .cse59 .cse60 .cse61) (and .cse1 (= |c_ULTIMATE.start_main_~p~0#1| 0) .cse62 (= |c_ULTIMATE.start_main_~h~0#1| 0) .cse4 .cse5 (= |c_#NULL.offset| 0) (< (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296) (mod |c_ULTIMATE.start_main_~q~0#1| 4294967296)) .cse58 (< |c_ULTIMATE.start_main_#t~post6#1| 11) .cse59 .cse61 (= |c_#NULL.base| 0)))) (let ((.cse63 (<= c_~counter~0 12))) (or (and (<= 0 |c_ULTIMATE.start_main_~h~0#1|) (<= 2 c_~counter~0) .cse0 (<= |c_ULTIMATE.start_main_~p~0#1| 0) .cse62 (<= |c_ULTIMATE.start_main_~h~0#1| 0) .cse3 (<= 0 |c_ULTIMATE.start_main_~p~0#1|) .cse4 .cse5 .cse6 .cse63 .cse57 .cse58 .cse59 .cse60 .cse61) (and .cse0 .cse2 .cse3 .cse4 .cse5 .cse6 .cse63 .cse57 .cse58 .cse59 .cse60 .cse61 (<= 3 c_~counter~0)))))) is different from false [2021-11-23 02:12:23,567 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (<= 2 c_~counter~0)) (.cse1 (<= 0 |c_#NULL.base|)) (.cse2 (<= |c_#NULL.offset| 0)) (.cse4 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|)) (.cse5 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse7 (<= |c_#NULL.base| 0)) (.cse8 (<= c_~counter~0 11)) (.cse9 (<= 0 |c_#NULL.offset|)) (.cse10 (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (.cse11 (<= 0 |c_#StackHeapBarrier|)) (.cse12 (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (and .cse0 .cse1 .cse2 (let ((.cse3 (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0))) (.cse6 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)))) (or (and .cse1 .cse3 .cse2 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (<= 3 c_~counter~0)) (and (<= 0 |c_ULTIMATE.start_main_~h~0#1|) .cse0 .cse1 .cse3 (<= |c_ULTIMATE.start_main_~p~0#1| 0) (<= |c_ULTIMATE.start_main_~h~0#1| 0) .cse2 (<= 0 |c_ULTIMATE.start_main_~p~0#1|) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))) .cse4 .cse5 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12)) is different from false [2021-11-23 02:13:50,025 WARN L227 SmtUtils]: Spent 1.24m on a formula simplification. DAG size of input: 87 DAG size of output: 87 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:15:41,435 WARN L227 SmtUtils]: Spent 1.64m on a formula simplification. DAG size of input: 117 DAG size of output: 117 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:15:43,441 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (<= 2 c_~counter~0)) (.cse1 (<= 0 |c_#NULL.base|)) (.cse2 (<= |c_#NULL.offset| 0)) (.cse6 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|)) (.cse7 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse9 (<= |c_#NULL.base| 0)) (.cse11 (<= c_~counter~0 11)) (.cse12 (<= 0 |c_#NULL.offset|)) (.cse13 (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (.cse14 (<= 0 |c_#StackHeapBarrier|)) (.cse15 (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (and .cse0 .cse1 .cse2 (let ((.cse17 (* |c_ULTIMATE.start_main_~h~0#1| 4))) (let ((.cse20 (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse16 (* .cse17 |c_ULTIMATE.start_main_~n~0#1|)) (.cse19 (* (* |c_ULTIMATE.start_main_~p~0#1| 4) |c_ULTIMATE.start_main_~q~0#1|)) (.cse18 (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|))) (let ((.cse3 (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0))) (.cse4 (not (= 0 (ite (= (mod (let ((.cse21 (* |c_ULTIMATE.start_main_~h~0#1| 12))) (+ (* (* .cse19 |c_ULTIMATE.start_main_~q~0#1|) 4294967295) (* (* (* (* |c_ULTIMATE.start_main_~p~0#1| 16) |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* .cse21 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) (* .cse18 |c_ULTIMATE.start_main_~h~0#1|) (* (* (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~q~0#1|) 4294967295) (* (* (* .cse21 |c_ULTIMATE.start_main_~n~0#1|) |c_ULTIMATE.start_main_~q~0#1|) 4294967295) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 16) |c_ULTIMATE.start_main_~p~0#1|) |c_ULTIMATE.start_main_~q~0#1|))) 4294967296) 0) 1 0)))) (.cse5 (not (= (ite (= (mod (+ (* (* (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) 4) |c_ULTIMATE.start_main_~q~0#1|) (* (* |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) (* (* .cse17 |c_ULTIMATE.start_main_~p~0#1|) |c_ULTIMATE.start_main_~r~0#1|) (* .cse18 |c_ULTIMATE.start_main_~n~0#1|) (* (* .cse20 |c_ULTIMATE.start_main_~q~0#1|) 4294967295) (* (* .cse18 |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* .cse16 |c_ULTIMATE.start_main_~p~0#1|) 4294967295) (* (* (* (* |c_ULTIMATE.start_main_~n~0#1| 8) |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967295) (* (* (* |c_ULTIMATE.start_main_~q~0#1| 4) |c_ULTIMATE.start_main_~r~0#1|) |c_ULTIMATE.start_main_~r~0#1|)) 4294967296) 0) 1 0) 0))) (.cse8 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod .cse20 4294967296)) 1 0) 0))) (.cse10 (not (= (ite (= (mod (+ (* (* .cse16 |c_ULTIMATE.start_main_~q~0#1|) 4294967295) (* (* (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~q~0#1|) 4294967295) (* (* .cse17 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) (* .cse18 |c_ULTIMATE.start_main_~p~0#1|) (* (* (* |c_ULTIMATE.start_main_~n~0#1| 4) |c_ULTIMATE.start_main_~p~0#1|) |c_ULTIMATE.start_main_~q~0#1|) (* (* .cse19 |c_ULTIMATE.start_main_~r~0#1|) 4294967295)) 4294967296) 0) 1 0) 0)))) (or (and (<= 0 |c_ULTIMATE.start_main_~h~0#1|) .cse0 .cse1 .cse3 (<= |c_ULTIMATE.start_main_~p~0#1| 0) .cse4 (<= |c_ULTIMATE.start_main_~h~0#1| 0) .cse2 (<= 0 |c_ULTIMATE.start_main_~p~0#1|) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) (and .cse1 .cse3 .cse4 .cse2 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 (<= 3 c_~counter~0)))))) .cse6 .cse7 .cse9 .cse11 .cse12 .cse13 .cse14 .cse15)) is different from false [2021-11-23 02:17:30,376 WARN L227 SmtUtils]: Spent 1.40m on a formula simplification. DAG size of input: 144 DAG size of output: 136 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:18:33,869 WARN L227 SmtUtils]: Spent 48.27s on a formula simplification that was a NOOP. DAG size: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:18:33,871 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2256#(and (<= 2 ~counter~0) (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= ~counter~0 12) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-23 02:18:33,871 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:18:33,871 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:18:33,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-11-23 02:18:33,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836420995] [2021-11-23 02:18:33,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 02:18:33,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 02:18:33,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:18:33,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 02:18:33,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=483, Unknown=26, NotChecked=196, Total=812 [2021-11-23 02:18:33,874 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:18:37,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:18:39,324 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:18:42,172 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:44,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:46,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:18:49,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:18:54,806 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.99s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:56,978 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:58,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:00,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:02,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:04,290 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:06,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:08,414 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:10,578 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:12,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:14,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:16,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:18,604 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:20,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:22,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:24,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:26,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:28,624 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:30,627 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:32,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:34,634 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:36,806 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:38,814 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:40,900 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:19:41,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:19:41,278 INFO L93 Difference]: Finished difference Result 255 states and 327 transitions. [2021-11-23 02:19:41,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:19:41,287 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 46 [2021-11-23 02:19:41,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:19:41,290 INFO L225 Difference]: With dead ends: 255 [2021-11-23 02:19:41,290 INFO L226 Difference]: Without dead ends: 246 [2021-11-23 02:19:41,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 377.6s TimeCoverageRelationStatistics Valid=149, Invalid=711, Unknown=26, NotChecked=236, Total=1122 [2021-11-23 02:19:41,291 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 124 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 51 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:19:41,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 267 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 201 Invalid, 28 Unknown, 0 Unchecked, 67.3s Time] [2021-11-23 02:19:41,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-11-23 02:19:41,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 232. [2021-11-23 02:19:41,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 127 states have (on average 1.1338582677165354) internal successors, (144), 132 states have internal predecessors, (144), 81 states have call successors, (81), 23 states have call predecessors, (81), 23 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2021-11-23 02:19:41,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 301 transitions. [2021-11-23 02:19:41,322 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 301 transitions. Word has length 46 [2021-11-23 02:19:41,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:19:41,322 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 301 transitions. [2021-11-23 02:19:41,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:19:41,323 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 301 transitions. [2021-11-23 02:19:41,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 02:19:41,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:19:41,326 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:19:41,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:19:41,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:19:41,540 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:19:41,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:19:41,541 INFO L85 PathProgramCache]: Analyzing trace with hash -786198320, now seen corresponding path program 1 times [2021-11-23 02:19:41,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:19:41,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579589360] [2021-11-23 02:19:41,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:19:41,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:19:41,550 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:19:41,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884181481] [2021-11-23 02:19:41,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:19:41,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:19:41,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:19:41,561 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:19:41,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b26206a-5a6c-456e-bf8b-9e7c3189623a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process