./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cde51297e6fd0e941efee971bf40d8442d789ab4fb58443b4ef667bb6a80abb8 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:12:05,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:12:05,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:12:05,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:12:05,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:12:05,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:12:05,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:12:05,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:12:05,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:12:05,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:12:05,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:12:05,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:12:05,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:12:05,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:12:05,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:12:05,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:12:05,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:12:05,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:12:05,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:12:05,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:12:05,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:12:05,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:12:05,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:12:05,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:12:05,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:12:05,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:12:05,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:12:05,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:12:05,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:12:05,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:12:05,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:12:05,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:12:05,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:12:05,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:12:05,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:12:05,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:12:05,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:12:05,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:12:05,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:12:05,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:12:05,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:12:05,876 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 18:12:05,901 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:12:05,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:12:05,902 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:12:05,902 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:12:05,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:12:05,902 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:12:05,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:12:05,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:12:05,903 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:12:05,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:12:05,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:12:05,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:12:05,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:12:05,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:12:05,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:12:05,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:12:05,904 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:12:05,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:12:05,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:12:05,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:12:05,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:12:05,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:12:05,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:12:05,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:12:05,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:12:05,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:12:05,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:12:05,906 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:12:05,906 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:12:05,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:12:05,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:12:05,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cde51297e6fd0e941efee971bf40d8442d789ab4fb58443b4ef667bb6a80abb8 [2021-12-06 18:12:06,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:12:06,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:12:06,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:12:06,095 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:12:06,095 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:12:06,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-12-06 18:12:06,144 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/data/f87aa228a/e39c0bc9206947e680b6bd1a40874681/FLAGcaac345ed [2021-12-06 18:12:06,832 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:12:06,832 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-12-06 18:12:06,864 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/data/f87aa228a/e39c0bc9206947e680b6bd1a40874681/FLAGcaac345ed [2021-12-06 18:12:07,119 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/data/f87aa228a/e39c0bc9206947e680b6bd1a40874681 [2021-12-06 18:12:07,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:12:07,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:12:07,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:12:07,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:12:07,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:12:07,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:12:07" (1/1) ... [2021-12-06 18:12:07,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35812df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:12:07, skipping insertion in model container [2021-12-06 18:12:07,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:12:07" (1/1) ... [2021-12-06 18:12:07,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:12:07,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:12:10,397 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_e721b1e7-6f90-4ae0-849a-52290a293d7a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464446,464459] [2021-12-06 18:12:10,399 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_e721b1e7-6f90-4ae0-849a-52290a293d7a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464591,464604] [2021-12-06 18:12:10,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:12:10,446 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:12:10,739 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_e721b1e7-6f90-4ae0-849a-52290a293d7a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464446,464459] [2021-12-06 18:12:10,739 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_e721b1e7-6f90-4ae0-849a-52290a293d7a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464591,464604] [2021-12-06 18:12:10,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:12:10,935 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:12:10,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:12:10 WrapperNode [2021-12-06 18:12:10,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:12:10,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:12:10,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:12:10,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:12:10,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:12:10" (1/1) ... [2021-12-06 18:12:11,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:12:10" (1/1) ... [2021-12-06 18:12:11,215 INFO L137 Inliner]: procedures = 623, calls = 3565, calls flagged for inlining = 310, calls inlined = 274, statements flattened = 8094 [2021-12-06 18:12:11,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:12:11,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:12:11,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:12:11,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:12:11,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:12:10" (1/1) ... [2021-12-06 18:12:11,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:12:10" (1/1) ... [2021-12-06 18:12:11,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:12:10" (1/1) ... [2021-12-06 18:12:11,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:12:10" (1/1) ... [2021-12-06 18:12:11,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:12:10" (1/1) ... [2021-12-06 18:12:11,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:12:10" (1/1) ... [2021-12-06 18:12:11,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:12:10" (1/1) ... [2021-12-06 18:12:11,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:12:11,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:12:11,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:12:11,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:12:11,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:12:10" (1/1) ... [2021-12-06 18:12:11,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:12:11,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:12:11,453 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:12:11,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:12:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-12-06 18:12:11,492 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-12-06 18:12:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-06 18:12:11,492 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-06 18:12:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_read_phy_reg [2021-12-06 18:12:11,492 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_read_phy_reg [2021-12-06 18:12:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-06 18:12:11,493 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-06 18:12:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_force_ps [2021-12-06 18:12:11,493 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_force_ps [2021-12-06 18:12:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-12-06 18:12:11,493 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-12-06 18:12:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-06 18:12:11,493 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-06 18:12:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 18:12:11,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 18:12:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_del_timer [2021-12-06 18:12:11,494 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_del_timer [2021-12-06 18:12:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2021-12-06 18:12:11,494 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2021-12-06 18:12:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-12-06 18:12:11,494 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-12-06 18:12:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-06 18:12:11,495 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-06 18:12:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-06 18:12:11,495 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-06 18:12:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-06 18:12:11,495 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-06 18:12:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_disable [2021-12-06 18:12:11,495 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_disable [2021-12-06 18:12:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_io_resume [2021-12-06 18:12:11,496 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_io_resume [2021-12-06 18:12:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_restart_autoneg [2021-12-06 18:12:11,496 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_restart_autoneg [2021-12-06 18:12:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_close [2021-12-06 18:12:11,496 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_close [2021-12-06 18:12:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-06 18:12:11,497 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-06 18:12:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-12-06 18:12:11,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-12-06 18:12:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_tpd [2021-12-06 18:12:11,497 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_tpd [2021-12-06 18:12:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-06 18:12:11,497 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-06 18:12:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-12-06 18:12:11,498 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-12-06 18:12:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-06 18:12:11,498 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-06 18:12:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-06 18:12:11,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-06 18:12:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-06 18:12:11,498 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-06 18:12:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_free_irq [2021-12-06 18:12:11,499 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_free_irq [2021-12-06 18:12:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-06 18:12:11,499 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-06 18:12:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-12-06 18:12:11,499 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-12-06 18:12:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:12:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_106 [2021-12-06 18:12:11,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_106 [2021-12-06 18:12:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-12-06 18:12:11,500 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-12-06 18:12:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_shutdown [2021-12-06 18:12:11,500 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_shutdown [2021-12-06 18:12:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-12-06 18:12:11,500 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-12-06 18:12:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_check_eeprom_exist [2021-12-06 18:12:11,501 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_check_eeprom_exist [2021-12-06 18:12:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-12-06 18:12:11,501 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-12-06 18:12:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-06 18:12:11,501 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-06 18:12:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-06 18:12:11,501 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-06 18:12:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 18:12:11,502 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_hw_set_mac_addr [2021-12-06 18:12:11,502 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_hw_set_mac_addr [2021-12-06 18:12:11,502 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-06 18:12:11,502 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-06 18:12:11,502 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-06 18:12:11,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-06 18:12:11,502 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_tx_buffer [2021-12-06 18:12:11,502 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_tx_buffer [2021-12-06 18:12:11,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 18:12:11,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-12-06 18:12:11,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-12-06 18:12:11,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 18:12:11,503 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-06 18:12:11,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-06 18:12:11,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-12-06 18:12:11,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-12-06 18:12:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 18:12:11,504 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 18:12:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-12-06 18:12:11,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-12-06 18:12:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-12-06 18:12:11,504 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-12-06 18:12:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-12-06 18:12:11,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-12-06 18:12:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-12-06 18:12:11,505 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-12-06 18:12:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-12-06 18:12:11,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-12-06 18:12:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-06 18:12:11,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-06 18:12:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_reset [2021-12-06 18:12:11,505 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_reset [2021-12-06 18:12:11,506 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-06 18:12:11,506 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-06 18:12:11,506 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-06 18:12:11,506 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-06 18:12:11,506 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_down [2021-12-06 18:12:11,506 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_down [2021-12-06 18:12:11,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 18:12:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure __atl1e_vlan_mode [2021-12-06 18:12:11,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __atl1e_vlan_mode [2021-12-06 18:12:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-12-06 18:12:11,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-12-06 18:12:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-12-06 18:12:11,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-12-06 18:12:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:12:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-12-06 18:12:11,508 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-12-06 18:12:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-06 18:12:11,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-06 18:12:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-06 18:12:11,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-06 18:12:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 18:12:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-06 18:12:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-12-06 18:12:11,509 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-12-06 18:12:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-12-06 18:12:11,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-12-06 18:12:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-12-06 18:12:11,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-12-06 18:12:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-12-06 18:12:11,509 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-12-06 18:12:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_set_multi [2021-12-06 18:12:11,510 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_set_multi [2021-12-06 18:12:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_remove [2021-12-06 18:12:11,510 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_remove [2021-12-06 18:12:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-12-06 18:12:11,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-12-06 18:12:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_atl1e_driver_exit_14_2 [2021-12-06 18:12:11,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_atl1e_driver_exit_14_2 [2021-12-06 18:12:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-06 18:12:11,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-06 18:12:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-12-06 18:12:11,511 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-12-06 18:12:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-06 18:12:11,511 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-06 18:12:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-12-06 18:12:11,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-12-06 18:12:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_free_ring_resources [2021-12-06 18:12:11,512 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_free_ring_resources [2021-12-06 18:12:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-12-06 18:12:11,512 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-12-06 18:12:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-12-06 18:12:11,512 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-12-06 18:12:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-06 18:12:11,513 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-06 18:12:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_validate_option [2021-12-06 18:12:11,513 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_validate_option [2021-12-06 18:12:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-12-06 18:12:11,513 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-12-06 18:12:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-12-06 18:12:11,513 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-12-06 18:12:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:12:11,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:12:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-12-06 18:12:11,514 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-12-06 18:12:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-06 18:12:11,514 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-06 18:12:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 18:12:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 18:12:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 18:12:11,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 18:12:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-12-06 18:12:11,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-12-06 18:12:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-12-06 18:12:11,515 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-12-06 18:12:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-12-06 18:12:11,515 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-12-06 18:12:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-12-06 18:12:11,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-12-06 18:12:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_clean_tx_ring [2021-12-06 18:12:11,516 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_clean_tx_ring [2021-12-06 18:12:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mdio_lock_of_atl1e_adapter [2021-12-06 18:12:11,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mdio_lock_of_atl1e_adapter [2021-12-06 18:12:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-06 18:12:11,516 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-06 18:12:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-12-06 18:12:11,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-12-06 18:12:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-12-06 18:12:11,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-12-06 18:12:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_mdio_lock_of_atl1e_adapter [2021-12-06 18:12:11,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_mdio_lock_of_atl1e_adapter [2021-12-06 18:12:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-06 18:12:11,517 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-06 18:12:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-06 18:12:11,517 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-06 18:12:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_resume [2021-12-06 18:12:11,518 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_resume [2021-12-06 18:12:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-06 18:12:11,518 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-06 18:12:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-12-06 18:12:11,518 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-12-06 18:12:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 18:12:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-06 18:12:11,519 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-06 18:12:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-12-06 18:12:11,519 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-12-06 18:12:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-06 18:12:11,519 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-06 18:12:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_tx_timeout [2021-12-06 18:12:11,519 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_tx_timeout [2021-12-06 18:12:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_114 [2021-12-06 18:12:11,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_114 [2021-12-06 18:12:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 18:12:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_vlan_mode [2021-12-06 18:12:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_vlan_mode [2021-12-06 18:12:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_write_phy_reg [2021-12-06 18:12:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_write_phy_reg [2021-12-06 18:12:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-12-06 18:12:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-12-06 18:12:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_102 [2021-12-06 18:12:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_102 [2021-12-06 18:12:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_up [2021-12-06 18:12:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_up [2021-12-06 18:12:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 18:12:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_phy_commit [2021-12-06 18:12:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_phy_commit [2021-12-06 18:12:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-12-06 18:12:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-12-06 18:12:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-06 18:12:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-06 18:12:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-06 18:12:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-06 18:12:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-12-06 18:12:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-12-06 18:12:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-06 18:12:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-06 18:12:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-06 18:12:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-06 18:12:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_reinit_locked [2021-12-06 18:12:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_reinit_locked [2021-12-06 18:12:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_phy_init [2021-12-06 18:12:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_phy_init [2021-12-06 18:12:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_intr [2021-12-06 18:12:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_intr [2021-12-06 18:12:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-06 18:12:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-06 18:12:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-12-06 18:12:11,524 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-12-06 18:12:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_open [2021-12-06 18:12:11,524 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_open [2021-12-06 18:12:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-06 18:12:11,524 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-06 18:12:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-12-06 18:12:11,524 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-12-06 18:12:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_enable [2021-12-06 18:12:11,524 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_enable [2021-12-06 18:12:11,525 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-06 18:12:11,525 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-06 18:12:11,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 18:12:11,525 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_netpoll [2021-12-06 18:12:11,525 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_netpoll [2021-12-06 18:12:11,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 18:12:11,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 18:12:11,525 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_read_eeprom [2021-12-06 18:12:11,525 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_read_eeprom [2021-12-06 18:12:11,526 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_suspend [2021-12-06 18:12:11,526 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_suspend [2021-12-06 18:12:11,526 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-06 18:12:11,526 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-06 18:12:11,526 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-12-06 18:12:11,526 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-12-06 18:12:11,526 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_nway_reset [2021-12-06 18:12:11,526 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_nway_reset [2021-12-06 18:12:11,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_105 [2021-12-06 18:12:11,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_105 [2021-12-06 18:12:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-12-06 18:12:11,527 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-12-06 18:12:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_request_irq [2021-12-06 18:12:11,527 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_request_irq [2021-12-06 18:12:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-12-06 18:12:11,527 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-12-06 18:12:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-12-06 18:12:11,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-12-06 18:12:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-12-06 18:12:11,527 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-12-06 18:12:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-12-06 18:12:11,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-12-06 18:12:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_eeprom_len [2021-12-06 18:12:11,528 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_eeprom_len [2021-12-06 18:12:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-06 18:12:11,528 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-06 18:12:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-12-06 18:12:11,528 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-12-06 18:12:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_reset_hw [2021-12-06 18:12:11,528 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_reset_hw [2021-12-06 18:12:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-12-06 18:12:11,528 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-12-06 18:12:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-12-06 18:12:11,528 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-12-06 18:12:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:12:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-12-06 18:12:11,529 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-12-06 18:12:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-12-06 18:12:11,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-12-06 18:12:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_regs_len [2021-12-06 18:12:11,529 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_regs_len [2021-12-06 18:12:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_clean_rx_ring [2021-12-06 18:12:11,529 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_clean_rx_ring [2021-12-06 18:12:12,149 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:12:12,152 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:12:12,366 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 18:12:19,707 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-12-06 18:12:19,782 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:12:19,808 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:12:19,808 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 18:12:19,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:12:19 BoogieIcfgContainer [2021-12-06 18:12:19,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:12:19,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:12:19,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:12:19,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:12:19,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:12:07" (1/3) ... [2021-12-06 18:12:19,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5381ce3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:12:19, skipping insertion in model container [2021-12-06 18:12:19,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:12:10" (2/3) ... [2021-12-06 18:12:19,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5381ce3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:12:19, skipping insertion in model container [2021-12-06 18:12:19,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:12:19" (3/3) ... [2021-12-06 18:12:19,819 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-12-06 18:12:19,823 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:12:19,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:12:19,870 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:12:19,876 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=PETRI_NET, 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 [2021-12-06 18:12:19,876 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:12:19,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 2837 states, 1921 states have (on average 1.2613222280062468) internal successors, (2423), 1946 states have internal predecessors, (2423), 767 states have call successors, (767), 149 states have call predecessors, (767), 148 states have return successors, (761), 759 states have call predecessors, (761), 761 states have call successors, (761) [2021-12-06 18:12:19,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-12-06 18:12:19,971 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:12:19,972 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:12:19,972 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:12:19,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:12:19,977 INFO L85 PathProgramCache]: Analyzing trace with hash -24091557, now seen corresponding path program 1 times [2021-12-06 18:12:19,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:12:19,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528201700] [2021-12-06 18:12:19,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:19,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:12:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:12:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:12:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 18:12:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 18:12:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 18:12:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 18:12:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 18:12:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 18:12:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 18:12:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 18:12:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:12:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 18:12:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 18:12:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 18:12:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 18:12:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 18:12:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 18:12:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-06 18:12:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 18:12:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 18:12:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-12-06 18:12:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:20,914 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2021-12-06 18:12:20,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:12:20,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528201700] [2021-12-06 18:12:20,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528201700] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:12:20,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:12:20,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:12:20,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876363901] [2021-12-06 18:12:20,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:12:20,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:12:20,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:12:20,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:12:20,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:12:20,947 INFO L87 Difference]: Start difference. First operand has 2837 states, 1921 states have (on average 1.2613222280062468) internal successors, (2423), 1946 states have internal predecessors, (2423), 767 states have call successors, (767), 149 states have call predecessors, (767), 148 states have return successors, (761), 759 states have call predecessors, (761), 761 states have call successors, (761) Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-06 18:12:25,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:12:25,376 INFO L93 Difference]: Finished difference Result 7783 states and 10945 transitions. [2021-12-06 18:12:25,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:12:25,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 231 [2021-12-06 18:12:25,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:12:25,417 INFO L225 Difference]: With dead ends: 7783 [2021-12-06 18:12:25,417 INFO L226 Difference]: Without dead ends: 4893 [2021-12-06 18:12:25,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:12:25,437 INFO L933 BasicCegarLoop]: 4108 mSDtfsCounter, 3707 mSDsluCounter, 4515 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 1870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4243 SdHoareTripleChecker+Valid, 8623 SdHoareTripleChecker+Invalid, 4262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1870 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:12:25,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4243 Valid, 8623 Invalid, 4262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1870 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-06 18:12:25,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2021-12-06 18:12:25,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 4656. [2021-12-06 18:12:25,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4656 states, 3168 states have (on average 1.2512626262626263) internal successors, (3964), 3211 states have internal predecessors, (3964), 1222 states have call successors, (1222), 266 states have call predecessors, (1222), 265 states have return successors, (1222), 1215 states have call predecessors, (1222), 1222 states have call successors, (1222) [2021-12-06 18:12:25,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4656 states to 4656 states and 6408 transitions. [2021-12-06 18:12:25,706 INFO L78 Accepts]: Start accepts. Automaton has 4656 states and 6408 transitions. Word has length 231 [2021-12-06 18:12:25,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:12:25,707 INFO L470 AbstractCegarLoop]: Abstraction has 4656 states and 6408 transitions. [2021-12-06 18:12:25,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-06 18:12:25,707 INFO L276 IsEmpty]: Start isEmpty. Operand 4656 states and 6408 transitions. [2021-12-06 18:12:25,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-12-06 18:12:25,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:12:25,716 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:12:25,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:12:25,716 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:12:25,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:12:25,716 INFO L85 PathProgramCache]: Analyzing trace with hash 757183165, now seen corresponding path program 1 times [2021-12-06 18:12:25,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:12:25,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922100349] [2021-12-06 18:12:25,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:25,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:12:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:12:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:12:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 18:12:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 18:12:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 18:12:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 18:12:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 18:12:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 18:12:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 18:12:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 18:12:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:12:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 18:12:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 18:12:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 18:12:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 18:12:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-06 18:12:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-06 18:12:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-06 18:12:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-06 18:12:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-12-06 18:12:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2021-12-06 18:12:26,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:12:26,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922100349] [2021-12-06 18:12:26,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922100349] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:12:26,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:12:26,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:12:26,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830482019] [2021-12-06 18:12:26,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:12:26,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:12:26,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:12:26,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:12:26,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:12:26,156 INFO L87 Difference]: Start difference. First operand 4656 states and 6408 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-06 18:12:30,125 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:34,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:37,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:39,900 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:42,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:12:42,627 INFO L93 Difference]: Finished difference Result 12961 states and 18069 transitions. [2021-12-06 18:12:42,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:12:42,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 239 [2021-12-06 18:12:42,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:12:42,671 INFO L225 Difference]: With dead ends: 12961 [2021-12-06 18:12:42,672 INFO L226 Difference]: Without dead ends: 8338 [2021-12-06 18:12:42,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:12:42,688 INFO L933 BasicCegarLoop]: 5265 mSDtfsCounter, 4923 mSDsluCounter, 6805 mSDsCounter, 0 mSdLazyCounter, 4737 mSolverCounterSat, 3219 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5353 SdHoareTripleChecker+Valid, 12070 SdHoareTripleChecker+Invalid, 7960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3219 IncrementalHoareTripleChecker+Valid, 4737 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:12:42,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5353 Valid, 12070 Invalid, 7960 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3219 Valid, 4737 Invalid, 4 Unknown, 0 Unchecked, 16.0s Time] [2021-12-06 18:12:42,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8338 states. [2021-12-06 18:12:42,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8338 to 7061. [2021-12-06 18:12:42,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7061 states, 4834 states have (on average 1.2498965659908978) internal successors, (6042), 4895 states have internal predecessors, (6042), 1808 states have call successors, (1808), 419 states have call predecessors, (1808), 418 states have return successors, (1808), 1798 states have call predecessors, (1808), 1808 states have call successors, (1808) [2021-12-06 18:12:42,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 9658 transitions. [2021-12-06 18:12:42,963 INFO L78 Accepts]: Start accepts. Automaton has 7061 states and 9658 transitions. Word has length 239 [2021-12-06 18:12:42,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:12:42,964 INFO L470 AbstractCegarLoop]: Abstraction has 7061 states and 9658 transitions. [2021-12-06 18:12:42,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-06 18:12:42,964 INFO L276 IsEmpty]: Start isEmpty. Operand 7061 states and 9658 transitions. [2021-12-06 18:12:42,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-12-06 18:12:42,971 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:12:42,972 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:12:42,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:12:42,972 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:12:42,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:12:42,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2051024223, now seen corresponding path program 1 times [2021-12-06 18:12:42,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:12:42,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853514809] [2021-12-06 18:12:42,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:42,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:12:43,052 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:12:43,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347336577] [2021-12-06 18:12:43,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:43,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:12:43,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:12:43,054 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:12:43,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:12:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:43,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 4059 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:12:43,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:12:44,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-12-06 18:12:44,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:12:44,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:12:44,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853514809] [2021-12-06 18:12:44,271 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:12:44,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347336577] [2021-12-06 18:12:44,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347336577] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:12:44,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:12:44,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:12:44,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510586995] [2021-12-06 18:12:44,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:12:44,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:12:44,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:12:44,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:12:44,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:12:44,273 INFO L87 Difference]: Start difference. First operand 7061 states and 9658 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:12:44,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:12:44,467 INFO L93 Difference]: Finished difference Result 14089 states and 19286 transitions. [2021-12-06 18:12:44,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:12:44,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 303 [2021-12-06 18:12:44,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:12:44,505 INFO L225 Difference]: With dead ends: 14089 [2021-12-06 18:12:44,505 INFO L226 Difference]: Without dead ends: 7061 [2021-12-06 18:12:44,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:12:44,525 INFO L933 BasicCegarLoop]: 3853 mSDtfsCounter, 3681 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3681 SdHoareTripleChecker+Valid, 3853 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:12:44,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3681 Valid, 3853 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:12:44,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2021-12-06 18:12:44,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 7061. [2021-12-06 18:12:44,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7061 states, 4834 states have (on average 1.2492759619362845) internal successors, (6039), 4895 states have internal predecessors, (6039), 1808 states have call successors, (1808), 419 states have call predecessors, (1808), 418 states have return successors, (1808), 1798 states have call predecessors, (1808), 1808 states have call successors, (1808) [2021-12-06 18:12:44,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 9655 transitions. [2021-12-06 18:12:44,778 INFO L78 Accepts]: Start accepts. Automaton has 7061 states and 9655 transitions. Word has length 303 [2021-12-06 18:12:44,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:12:44,778 INFO L470 AbstractCegarLoop]: Abstraction has 7061 states and 9655 transitions. [2021-12-06 18:12:44,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:12:44,779 INFO L276 IsEmpty]: Start isEmpty. Operand 7061 states and 9655 transitions. [2021-12-06 18:12:44,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-12-06 18:12:44,787 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:12:44,787 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:12:44,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:12:44,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:12:44,988 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:12:44,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:12:44,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1224467345, now seen corresponding path program 1 times [2021-12-06 18:12:44,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:12:44,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029535218] [2021-12-06 18:12:44,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:44,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:12:45,089 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:12:45,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288493501] [2021-12-06 18:12:45,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:45,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:12:45,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:12:45,091 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:12:45,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:12:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:45,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 4060 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:12:45,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:12:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-12-06 18:12:46,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:12:46,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:12:46,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029535218] [2021-12-06 18:12:46,164 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:12:46,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288493501] [2021-12-06 18:12:46,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288493501] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:12:46,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:12:46,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:12:46,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707370496] [2021-12-06 18:12:46,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:12:46,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:12:46,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:12:46,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:12:46,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:12:46,165 INFO L87 Difference]: Start difference. First operand 7061 states and 9655 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:12:46,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:12:46,323 INFO L93 Difference]: Finished difference Result 14089 states and 19280 transitions. [2021-12-06 18:12:46,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:12:46,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 304 [2021-12-06 18:12:46,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:12:46,358 INFO L225 Difference]: With dead ends: 14089 [2021-12-06 18:12:46,358 INFO L226 Difference]: Without dead ends: 7061 [2021-12-06 18:12:46,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:12:46,380 INFO L933 BasicCegarLoop]: 3852 mSDtfsCounter, 3679 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3679 SdHoareTripleChecker+Valid, 3852 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:12:46,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3679 Valid, 3852 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:12:46,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2021-12-06 18:12:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 7061. [2021-12-06 18:12:46,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7061 states, 4834 states have (on average 1.2486553578816715) internal successors, (6036), 4895 states have internal predecessors, (6036), 1808 states have call successors, (1808), 419 states have call predecessors, (1808), 418 states have return successors, (1808), 1798 states have call predecessors, (1808), 1808 states have call successors, (1808) [2021-12-06 18:12:46,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 9652 transitions. [2021-12-06 18:12:46,626 INFO L78 Accepts]: Start accepts. Automaton has 7061 states and 9652 transitions. Word has length 304 [2021-12-06 18:12:46,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:12:46,627 INFO L470 AbstractCegarLoop]: Abstraction has 7061 states and 9652 transitions. [2021-12-06 18:12:46,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:12:46,628 INFO L276 IsEmpty]: Start isEmpty. Operand 7061 states and 9652 transitions. [2021-12-06 18:12:46,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-12-06 18:12:46,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:12:46,635 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:12:46,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 18:12:46,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:12:46,838 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:12:46,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:12:46,839 INFO L85 PathProgramCache]: Analyzing trace with hash -199992547, now seen corresponding path program 1 times [2021-12-06 18:12:46,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:12:46,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058159525] [2021-12-06 18:12:46,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:46,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:12:47,044 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:12:47,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109247431] [2021-12-06 18:12:47,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:47,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:12:47,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:12:47,045 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:12:47,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 18:12:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:47,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 4061 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:12:47,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:12:48,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-12-06 18:12:48,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:12:48,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:12:48,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058159525] [2021-12-06 18:12:48,059 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:12:48,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109247431] [2021-12-06 18:12:48,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109247431] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:12:48,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:12:48,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:12:48,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566785762] [2021-12-06 18:12:48,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:12:48,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:12:48,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:12:48,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:12:48,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:12:48,061 INFO L87 Difference]: Start difference. First operand 7061 states and 9652 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:12:48,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:12:48,224 INFO L93 Difference]: Finished difference Result 14089 states and 19274 transitions. [2021-12-06 18:12:48,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:12:48,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 305 [2021-12-06 18:12:48,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:12:48,249 INFO L225 Difference]: With dead ends: 14089 [2021-12-06 18:12:48,249 INFO L226 Difference]: Without dead ends: 7061 [2021-12-06 18:12:48,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:12:48,264 INFO L933 BasicCegarLoop]: 3851 mSDtfsCounter, 3677 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3677 SdHoareTripleChecker+Valid, 3851 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:12:48,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3677 Valid, 3851 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:12:48,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2021-12-06 18:12:48,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 7061. [2021-12-06 18:12:48,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7061 states, 4834 states have (on average 1.2480347538270584) internal successors, (6033), 4895 states have internal predecessors, (6033), 1808 states have call successors, (1808), 419 states have call predecessors, (1808), 418 states have return successors, (1808), 1798 states have call predecessors, (1808), 1808 states have call successors, (1808) [2021-12-06 18:12:48,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 9649 transitions. [2021-12-06 18:12:48,488 INFO L78 Accepts]: Start accepts. Automaton has 7061 states and 9649 transitions. Word has length 305 [2021-12-06 18:12:48,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:12:48,489 INFO L470 AbstractCegarLoop]: Abstraction has 7061 states and 9649 transitions. [2021-12-06 18:12:48,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:12:48,489 INFO L276 IsEmpty]: Start isEmpty. Operand 7061 states and 9649 transitions. [2021-12-06 18:12:48,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-12-06 18:12:48,497 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:12:48,497 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:12:48,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 18:12:48,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:12:48,697 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:12:48,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:12:48,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1294059635, now seen corresponding path program 1 times [2021-12-06 18:12:48,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:12:48,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841280233] [2021-12-06 18:12:48,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:48,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:12:48,766 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:12:48,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105147359] [2021-12-06 18:12:48,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:48,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:12:48,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:12:48,767 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:12:48,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 18:12:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:49,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 4062 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:12:49,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:12:49,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-12-06 18:12:49,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:12:49,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:12:49,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841280233] [2021-12-06 18:12:49,861 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:12:49,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105147359] [2021-12-06 18:12:49,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105147359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:12:49,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:12:49,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:12:49,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007814712] [2021-12-06 18:12:49,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:12:49,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:12:49,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:12:49,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:12:49,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:12:49,863 INFO L87 Difference]: Start difference. First operand 7061 states and 9649 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:12:50,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:12:50,061 INFO L93 Difference]: Finished difference Result 14089 states and 19268 transitions. [2021-12-06 18:12:50,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:12:50,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 306 [2021-12-06 18:12:50,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:12:50,081 INFO L225 Difference]: With dead ends: 14089 [2021-12-06 18:12:50,081 INFO L226 Difference]: Without dead ends: 7061 [2021-12-06 18:12:50,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:12:50,094 INFO L933 BasicCegarLoop]: 3850 mSDtfsCounter, 3675 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3675 SdHoareTripleChecker+Valid, 3850 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:12:50,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3675 Valid, 3850 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:12:50,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2021-12-06 18:12:50,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 7061. [2021-12-06 18:12:50,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7061 states, 4834 states have (on average 1.2474141497724451) internal successors, (6030), 4895 states have internal predecessors, (6030), 1808 states have call successors, (1808), 419 states have call predecessors, (1808), 418 states have return successors, (1808), 1798 states have call predecessors, (1808), 1808 states have call successors, (1808) [2021-12-06 18:12:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 9646 transitions. [2021-12-06 18:12:50,333 INFO L78 Accepts]: Start accepts. Automaton has 7061 states and 9646 transitions. Word has length 306 [2021-12-06 18:12:50,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:12:50,334 INFO L470 AbstractCegarLoop]: Abstraction has 7061 states and 9646 transitions. [2021-12-06 18:12:50,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:12:50,334 INFO L276 IsEmpty]: Start isEmpty. Operand 7061 states and 9646 transitions. [2021-12-06 18:12:50,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-12-06 18:12:50,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:12:50,340 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:12:50,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 18:12:50,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:12:50,540 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:12:50,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:12:50,541 INFO L85 PathProgramCache]: Analyzing trace with hash -735884391, now seen corresponding path program 1 times [2021-12-06 18:12:50,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:12:50,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796374306] [2021-12-06 18:12:50,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:50,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:12:50,607 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:12:50,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1931213451] [2021-12-06 18:12:50,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:50,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:12:50,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:12:50,608 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:12:50,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 18:12:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:51,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 4063 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:12:51,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:12:51,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-12-06 18:12:51,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:12:51,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:12:51,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796374306] [2021-12-06 18:12:51,729 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:12:51,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931213451] [2021-12-06 18:12:51,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931213451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:12:51,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:12:51,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:12:51,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467410280] [2021-12-06 18:12:51,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:12:51,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:12:51,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:12:51,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:12:51,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:12:51,730 INFO L87 Difference]: Start difference. First operand 7061 states and 9646 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:12:51,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:12:51,925 INFO L93 Difference]: Finished difference Result 14089 states and 19262 transitions. [2021-12-06 18:12:51,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:12:51,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 307 [2021-12-06 18:12:51,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:12:51,945 INFO L225 Difference]: With dead ends: 14089 [2021-12-06 18:12:51,945 INFO L226 Difference]: Without dead ends: 7061 [2021-12-06 18:12:51,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:12:51,958 INFO L933 BasicCegarLoop]: 3849 mSDtfsCounter, 3673 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3673 SdHoareTripleChecker+Valid, 3849 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:12:51,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3673 Valid, 3849 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:12:51,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2021-12-06 18:12:52,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 7061. [2021-12-06 18:12:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7061 states, 4834 states have (on average 1.246793545717832) internal successors, (6027), 4895 states have internal predecessors, (6027), 1808 states have call successors, (1808), 419 states have call predecessors, (1808), 418 states have return successors, (1808), 1798 states have call predecessors, (1808), 1808 states have call successors, (1808) [2021-12-06 18:12:52,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 9643 transitions. [2021-12-06 18:12:52,190 INFO L78 Accepts]: Start accepts. Automaton has 7061 states and 9643 transitions. Word has length 307 [2021-12-06 18:12:52,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:12:52,191 INFO L470 AbstractCegarLoop]: Abstraction has 7061 states and 9643 transitions. [2021-12-06 18:12:52,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:12:52,191 INFO L276 IsEmpty]: Start isEmpty. Operand 7061 states and 9643 transitions. [2021-12-06 18:12:52,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-12-06 18:12:52,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:12:52,197 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:12:52,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-06 18:12:52,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:12:52,398 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:12:52,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:12:52,398 INFO L85 PathProgramCache]: Analyzing trace with hash -497804407, now seen corresponding path program 1 times [2021-12-06 18:12:52,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:12:52,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83712504] [2021-12-06 18:12:52,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:52,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:12:52,488 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:12:52,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012090311] [2021-12-06 18:12:52,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:52,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:12:52,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:12:52,489 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:12:52,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 18:12:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:53,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 4064 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:12:53,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:12:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-12-06 18:12:53,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:12:53,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:12:53,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83712504] [2021-12-06 18:12:53,526 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:12:53,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012090311] [2021-12-06 18:12:53,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012090311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:12:53,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:12:53,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:12:53,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431184564] [2021-12-06 18:12:53,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:12:53,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:12:53,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:12:53,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:12:53,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:12:53,528 INFO L87 Difference]: Start difference. First operand 7061 states and 9643 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:12:53,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:12:53,805 INFO L93 Difference]: Finished difference Result 14089 states and 19256 transitions. [2021-12-06 18:12:53,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:12:53,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 308 [2021-12-06 18:12:53,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:12:53,828 INFO L225 Difference]: With dead ends: 14089 [2021-12-06 18:12:53,828 INFO L226 Difference]: Without dead ends: 7061 [2021-12-06 18:12:53,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:12:53,846 INFO L933 BasicCegarLoop]: 3848 mSDtfsCounter, 3671 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3671 SdHoareTripleChecker+Valid, 3848 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:12:53,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3671 Valid, 3848 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:12:53,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2021-12-06 18:12:54,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 7061. [2021-12-06 18:12:54,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7061 states, 4834 states have (on average 1.2461729416632188) internal successors, (6024), 4895 states have internal predecessors, (6024), 1808 states have call successors, (1808), 419 states have call predecessors, (1808), 418 states have return successors, (1808), 1798 states have call predecessors, (1808), 1808 states have call successors, (1808) [2021-12-06 18:12:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 9640 transitions. [2021-12-06 18:12:54,137 INFO L78 Accepts]: Start accepts. Automaton has 7061 states and 9640 transitions. Word has length 308 [2021-12-06 18:12:54,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:12:54,138 INFO L470 AbstractCegarLoop]: Abstraction has 7061 states and 9640 transitions. [2021-12-06 18:12:54,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:12:54,138 INFO L276 IsEmpty]: Start isEmpty. Operand 7061 states and 9640 transitions. [2021-12-06 18:12:54,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-06 18:12:54,143 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:12:54,143 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:12:54,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 18:12:54,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 18:12:54,344 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:12:54,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:12:54,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1592742891, now seen corresponding path program 1 times [2021-12-06 18:12:54,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:12:54,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250510857] [2021-12-06 18:12:54,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:54,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:12:54,407 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:12:54,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053506263] [2021-12-06 18:12:54,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:54,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:12:54,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:12:54,408 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:12:54,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 18:12:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:55,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 4065 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:12:55,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:12:55,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-12-06 18:12:55,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:12:55,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:12:55,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250510857] [2021-12-06 18:12:55,386 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:12:55,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053506263] [2021-12-06 18:12:55,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053506263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:12:55,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:12:55,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:12:55,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045992444] [2021-12-06 18:12:55,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:12:55,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:12:55,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:12:55,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:12:55,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:12:55,387 INFO L87 Difference]: Start difference. First operand 7061 states and 9640 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:12:55,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:12:55,598 INFO L93 Difference]: Finished difference Result 14089 states and 19250 transitions. [2021-12-06 18:12:55,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:12:55,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 309 [2021-12-06 18:12:55,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:12:55,617 INFO L225 Difference]: With dead ends: 14089 [2021-12-06 18:12:55,617 INFO L226 Difference]: Without dead ends: 7061 [2021-12-06 18:12:55,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:12:55,631 INFO L933 BasicCegarLoop]: 3847 mSDtfsCounter, 3669 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3669 SdHoareTripleChecker+Valid, 3847 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:12:55,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3669 Valid, 3847 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:12:55,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2021-12-06 18:12:55,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 7061. [2021-12-06 18:12:55,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7061 states, 4834 states have (on average 1.2455523376086057) internal successors, (6021), 4895 states have internal predecessors, (6021), 1808 states have call successors, (1808), 419 states have call predecessors, (1808), 418 states have return successors, (1808), 1798 states have call predecessors, (1808), 1808 states have call successors, (1808) [2021-12-06 18:12:55,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 9637 transitions. [2021-12-06 18:12:55,897 INFO L78 Accepts]: Start accepts. Automaton has 7061 states and 9637 transitions. Word has length 309 [2021-12-06 18:12:55,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:12:55,897 INFO L470 AbstractCegarLoop]: Abstraction has 7061 states and 9637 transitions. [2021-12-06 18:12:55,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:12:55,897 INFO L276 IsEmpty]: Start isEmpty. Operand 7061 states and 9637 transitions. [2021-12-06 18:12:55,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-12-06 18:12:55,902 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:12:55,902 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:12:55,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 18:12:56,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:12:56,104 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:12:56,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:12:56,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1061580923, now seen corresponding path program 1 times [2021-12-06 18:12:56,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:12:56,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831388703] [2021-12-06 18:12:56,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:56,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:12:56,197 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:12:56,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709557909] [2021-12-06 18:12:56,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:56,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:12:56,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:12:56,198 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:12:56,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 18:12:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:56,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 4066 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:12:56,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:12:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-12-06 18:12:57,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:12:57,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:12:57,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831388703] [2021-12-06 18:12:57,209 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:12:57,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709557909] [2021-12-06 18:12:57,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709557909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:12:57,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:12:57,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:12:57,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4119997] [2021-12-06 18:12:57,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:12:57,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:12:57,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:12:57,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:12:57,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:12:57,210 INFO L87 Difference]: Start difference. First operand 7061 states and 9637 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:12:57,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:12:57,487 INFO L93 Difference]: Finished difference Result 14089 states and 19244 transitions. [2021-12-06 18:12:57,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:12:57,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 310 [2021-12-06 18:12:57,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:12:57,508 INFO L225 Difference]: With dead ends: 14089 [2021-12-06 18:12:57,508 INFO L226 Difference]: Without dead ends: 7061 [2021-12-06 18:12:57,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:12:57,524 INFO L933 BasicCegarLoop]: 3846 mSDtfsCounter, 3667 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3667 SdHoareTripleChecker+Valid, 3846 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:12:57,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3667 Valid, 3846 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:12:57,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2021-12-06 18:12:57,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 7061. [2021-12-06 18:12:57,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7061 states, 4834 states have (on average 1.2449317335539924) internal successors, (6018), 4895 states have internal predecessors, (6018), 1808 states have call successors, (1808), 419 states have call predecessors, (1808), 418 states have return successors, (1808), 1798 states have call predecessors, (1808), 1808 states have call successors, (1808) [2021-12-06 18:12:57,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 9634 transitions. [2021-12-06 18:12:57,847 INFO L78 Accepts]: Start accepts. Automaton has 7061 states and 9634 transitions. Word has length 310 [2021-12-06 18:12:57,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:12:57,848 INFO L470 AbstractCegarLoop]: Abstraction has 7061 states and 9634 transitions. [2021-12-06 18:12:57,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:12:57,848 INFO L276 IsEmpty]: Start isEmpty. Operand 7061 states and 9634 transitions. [2021-12-06 18:12:57,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-12-06 18:12:57,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:12:57,853 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:12:57,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 18:12:58,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:12:58,054 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:12:58,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:12:58,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1660912495, now seen corresponding path program 1 times [2021-12-06 18:12:58,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:12:58,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378994044] [2021-12-06 18:12:58,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:58,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:12:58,125 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:12:58,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019254547] [2021-12-06 18:12:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:58,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:12:58,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:12:58,126 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:12:58,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 18:12:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:58,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 4067 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:12:58,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:12:59,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-12-06 18:12:59,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:12:59,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:12:59,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378994044] [2021-12-06 18:12:59,127 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:12:59,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019254547] [2021-12-06 18:12:59,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019254547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:12:59,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:12:59,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:12:59,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311853007] [2021-12-06 18:12:59,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:12:59,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:12:59,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:12:59,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:12:59,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:12:59,128 INFO L87 Difference]: Start difference. First operand 7061 states and 9634 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:12:59,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:12:59,367 INFO L93 Difference]: Finished difference Result 14264 states and 19437 transitions. [2021-12-06 18:12:59,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:12:59,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 311 [2021-12-06 18:12:59,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:12:59,385 INFO L225 Difference]: With dead ends: 14264 [2021-12-06 18:12:59,385 INFO L226 Difference]: Without dead ends: 7236 [2021-12-06 18:12:59,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:12:59,399 INFO L933 BasicCegarLoop]: 3898 mSDtfsCounter, 3593 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3593 SdHoareTripleChecker+Valid, 4032 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:12:59,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3593 Valid, 4032 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:12:59,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2021-12-06 18:12:59,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 7236. [2021-12-06 18:12:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 4952 states have (on average 1.2439418416801293) internal successors, (6160), 5013 states have internal predecessors, (6160), 1835 states have call successors, (1835), 449 states have call predecessors, (1835), 448 states have return successors, (1835), 1825 states have call predecessors, (1835), 1835 states have call successors, (1835) [2021-12-06 18:12:59,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 9830 transitions. [2021-12-06 18:12:59,650 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 9830 transitions. Word has length 311 [2021-12-06 18:12:59,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:12:59,651 INFO L470 AbstractCegarLoop]: Abstraction has 7236 states and 9830 transitions. [2021-12-06 18:12:59,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:12:59,651 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 9830 transitions. [2021-12-06 18:12:59,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-12-06 18:12:59,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:12:59,656 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:12:59,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 18:12:59,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:12:59,857 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:12:59,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:12:59,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1349161857, now seen corresponding path program 1 times [2021-12-06 18:12:59,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:12:59,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433751342] [2021-12-06 18:12:59,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:59,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:12:59,940 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:12:59,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406452810] [2021-12-06 18:12:59,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:59,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:12:59,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:12:59,941 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:12:59,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 18:13:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:00,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 4068 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:13:00,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:13:00,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-12-06 18:13:00,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:13:00,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:00,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433751342] [2021-12-06 18:13:00,928 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:13:00,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406452810] [2021-12-06 18:13:00,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406452810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:13:00,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:13:00,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:13:00,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43785583] [2021-12-06 18:13:00,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:13:00,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:13:00,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:00,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:13:00,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:00,929 INFO L87 Difference]: Start difference. First operand 7236 states and 9830 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:13:01,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:13:01,159 INFO L93 Difference]: Finished difference Result 14439 states and 19630 transitions. [2021-12-06 18:13:01,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:13:01,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 312 [2021-12-06 18:13:01,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:13:01,176 INFO L225 Difference]: With dead ends: 14439 [2021-12-06 18:13:01,176 INFO L226 Difference]: Without dead ends: 7236 [2021-12-06 18:13:01,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:01,190 INFO L933 BasicCegarLoop]: 3844 mSDtfsCounter, 3663 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3663 SdHoareTripleChecker+Valid, 3844 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:13:01,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3663 Valid, 3844 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:13:01,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2021-12-06 18:13:01,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 7236. [2021-12-06 18:13:01,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 4952 states have (on average 1.243336025848142) internal successors, (6157), 5013 states have internal predecessors, (6157), 1835 states have call successors, (1835), 449 states have call predecessors, (1835), 448 states have return successors, (1835), 1825 states have call predecessors, (1835), 1835 states have call successors, (1835) [2021-12-06 18:13:01,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 9827 transitions. [2021-12-06 18:13:01,453 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 9827 transitions. Word has length 312 [2021-12-06 18:13:01,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:13:01,453 INFO L470 AbstractCegarLoop]: Abstraction has 7236 states and 9827 transitions. [2021-12-06 18:13:01,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:13:01,453 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 9827 transitions. [2021-12-06 18:13:01,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2021-12-06 18:13:01,458 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:13:01,459 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:01,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 18:13:01,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:01,660 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:13:01,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:01,661 INFO L85 PathProgramCache]: Analyzing trace with hash 286702861, now seen corresponding path program 1 times [2021-12-06 18:13:01,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:01,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478054301] [2021-12-06 18:13:01,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:01,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:01,723 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:13:01,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437601975] [2021-12-06 18:13:01,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:01,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:01,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:13:01,724 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:13:01,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 18:13:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:02,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 4069 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:13:02,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:13:02,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-12-06 18:13:02,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:13:02,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:02,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478054301] [2021-12-06 18:13:02,707 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:13:02,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437601975] [2021-12-06 18:13:02,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437601975] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:13:02,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:13:02,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:13:02,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904482207] [2021-12-06 18:13:02,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:13:02,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:13:02,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:02,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:13:02,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:02,709 INFO L87 Difference]: Start difference. First operand 7236 states and 9827 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:13:02,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:13:02,949 INFO L93 Difference]: Finished difference Result 14439 states and 19624 transitions. [2021-12-06 18:13:02,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:13:02,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 313 [2021-12-06 18:13:02,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:13:02,966 INFO L225 Difference]: With dead ends: 14439 [2021-12-06 18:13:02,967 INFO L226 Difference]: Without dead ends: 7236 [2021-12-06 18:13:02,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:02,981 INFO L933 BasicCegarLoop]: 3843 mSDtfsCounter, 3661 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3661 SdHoareTripleChecker+Valid, 3843 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:13:02,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3661 Valid, 3843 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:13:02,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2021-12-06 18:13:03,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 7236. [2021-12-06 18:13:03,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 4952 states have (on average 1.242730210016155) internal successors, (6154), 5013 states have internal predecessors, (6154), 1835 states have call successors, (1835), 449 states have call predecessors, (1835), 448 states have return successors, (1835), 1825 states have call predecessors, (1835), 1835 states have call successors, (1835) [2021-12-06 18:13:03,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 9824 transitions. [2021-12-06 18:13:03,299 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 9824 transitions. Word has length 313 [2021-12-06 18:13:03,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:13:03,300 INFO L470 AbstractCegarLoop]: Abstraction has 7236 states and 9824 transitions. [2021-12-06 18:13:03,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:13:03,300 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 9824 transitions. [2021-12-06 18:13:03,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-12-06 18:13:03,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:13:03,307 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:03,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 18:13:03,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 18:13:03,508 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:13:03,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:03,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1824728957, now seen corresponding path program 1 times [2021-12-06 18:13:03,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:03,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150307248] [2021-12-06 18:13:03,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:03,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:03,610 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:13:03,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331625088] [2021-12-06 18:13:03,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:03,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:03,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:13:03,611 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:13:03,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 18:13:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:04,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 4070 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:13:04,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:13:04,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-12-06 18:13:04,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:13:04,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:04,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150307248] [2021-12-06 18:13:04,633 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:13:04,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331625088] [2021-12-06 18:13:04,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331625088] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:13:04,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:13:04,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:13:04,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974569727] [2021-12-06 18:13:04,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:13:04,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:13:04,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:04,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:13:04,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:04,635 INFO L87 Difference]: Start difference. First operand 7236 states and 9824 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:13:04,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:13:04,931 INFO L93 Difference]: Finished difference Result 14439 states and 19618 transitions. [2021-12-06 18:13:04,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:13:04,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 314 [2021-12-06 18:13:04,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:13:04,948 INFO L225 Difference]: With dead ends: 14439 [2021-12-06 18:13:04,949 INFO L226 Difference]: Without dead ends: 7236 [2021-12-06 18:13:04,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:04,963 INFO L933 BasicCegarLoop]: 3842 mSDtfsCounter, 3659 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3659 SdHoareTripleChecker+Valid, 3842 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:13:04,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3659 Valid, 3842 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:13:04,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2021-12-06 18:13:05,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 7236. [2021-12-06 18:13:05,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 4952 states have (on average 1.242124394184168) internal successors, (6151), 5013 states have internal predecessors, (6151), 1835 states have call successors, (1835), 449 states have call predecessors, (1835), 448 states have return successors, (1835), 1825 states have call predecessors, (1835), 1835 states have call successors, (1835) [2021-12-06 18:13:05,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 9821 transitions. [2021-12-06 18:13:05,257 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 9821 transitions. Word has length 314 [2021-12-06 18:13:05,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:13:05,258 INFO L470 AbstractCegarLoop]: Abstraction has 7236 states and 9821 transitions. [2021-12-06 18:13:05,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:13:05,258 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 9821 transitions. [2021-12-06 18:13:05,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-12-06 18:13:05,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:13:05,264 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:05,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 18:13:05,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 18:13:05,465 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:13:05,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:05,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1921553015, now seen corresponding path program 1 times [2021-12-06 18:13:05,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:05,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101564141] [2021-12-06 18:13:05,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:05,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:05,578 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:13:05,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [869100394] [2021-12-06 18:13:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:05,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:05,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:13:05,580 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:13:05,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 18:13:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:06,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 4071 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:13:06,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:13:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-12-06 18:13:06,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:13:06,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:06,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101564141] [2021-12-06 18:13:06,517 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:13:06,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869100394] [2021-12-06 18:13:06,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869100394] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:13:06,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:13:06,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:13:06,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073635089] [2021-12-06 18:13:06,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:13:06,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:13:06,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:06,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:13:06,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:06,518 INFO L87 Difference]: Start difference. First operand 7236 states and 9821 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:13:06,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:13:06,784 INFO L93 Difference]: Finished difference Result 14439 states and 19612 transitions. [2021-12-06 18:13:06,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:13:06,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 315 [2021-12-06 18:13:06,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:13:06,802 INFO L225 Difference]: With dead ends: 14439 [2021-12-06 18:13:06,802 INFO L226 Difference]: Without dead ends: 7236 [2021-12-06 18:13:06,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:06,817 INFO L933 BasicCegarLoop]: 3841 mSDtfsCounter, 3657 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3657 SdHoareTripleChecker+Valid, 3841 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:13:06,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3657 Valid, 3841 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:13:06,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2021-12-06 18:13:07,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 7236. [2021-12-06 18:13:07,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 4952 states have (on average 1.241518578352181) internal successors, (6148), 5013 states have internal predecessors, (6148), 1835 states have call successors, (1835), 449 states have call predecessors, (1835), 448 states have return successors, (1835), 1825 states have call predecessors, (1835), 1835 states have call successors, (1835) [2021-12-06 18:13:07,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 9818 transitions. [2021-12-06 18:13:07,114 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 9818 transitions. Word has length 315 [2021-12-06 18:13:07,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:13:07,114 INFO L470 AbstractCegarLoop]: Abstraction has 7236 states and 9818 transitions. [2021-12-06 18:13:07,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:13:07,114 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 9818 transitions. [2021-12-06 18:13:07,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-12-06 18:13:07,119 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:13:07,120 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:07,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 18:13:07,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 18:13:07,321 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:13:07,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:07,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1977660551, now seen corresponding path program 1 times [2021-12-06 18:13:07,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:07,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751388382] [2021-12-06 18:13:07,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:07,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:07,384 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:13:07,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238500898] [2021-12-06 18:13:07,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:07,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:07,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:13:07,385 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:13:07,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 18:13:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:08,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 4072 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:13:08,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:13:08,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-12-06 18:13:08,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:13:08,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:08,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751388382] [2021-12-06 18:13:08,346 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:13:08,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238500898] [2021-12-06 18:13:08,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238500898] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:13:08,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:13:08,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:13:08,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169964303] [2021-12-06 18:13:08,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:13:08,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:13:08,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:08,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:13:08,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:08,347 INFO L87 Difference]: Start difference. First operand 7236 states and 9818 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:13:08,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:13:08,623 INFO L93 Difference]: Finished difference Result 14439 states and 19606 transitions. [2021-12-06 18:13:08,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:13:08,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 316 [2021-12-06 18:13:08,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:13:08,649 INFO L225 Difference]: With dead ends: 14439 [2021-12-06 18:13:08,649 INFO L226 Difference]: Without dead ends: 7236 [2021-12-06 18:13:08,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:08,666 INFO L933 BasicCegarLoop]: 3840 mSDtfsCounter, 3655 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3655 SdHoareTripleChecker+Valid, 3840 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:13:08,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3655 Valid, 3840 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:13:08,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2021-12-06 18:13:08,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 7236. [2021-12-06 18:13:08,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 4952 states have (on average 1.240912762520194) internal successors, (6145), 5013 states have internal predecessors, (6145), 1835 states have call successors, (1835), 449 states have call predecessors, (1835), 448 states have return successors, (1835), 1825 states have call predecessors, (1835), 1835 states have call successors, (1835) [2021-12-06 18:13:08,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 9815 transitions. [2021-12-06 18:13:08,971 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 9815 transitions. Word has length 316 [2021-12-06 18:13:08,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:13:08,971 INFO L470 AbstractCegarLoop]: Abstraction has 7236 states and 9815 transitions. [2021-12-06 18:13:08,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:13:08,971 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 9815 transitions. [2021-12-06 18:13:08,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-12-06 18:13:08,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:13:08,977 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:09,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 18:13:09,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 18:13:09,178 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:13:09,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:09,179 INFO L85 PathProgramCache]: Analyzing trace with hash 692489733, now seen corresponding path program 1 times [2021-12-06 18:13:09,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:09,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899564211] [2021-12-06 18:13:09,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:09,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:09,236 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:13:09,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951650036] [2021-12-06 18:13:09,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:09,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:09,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:13:09,237 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:13:09,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 18:13:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:09,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 4073 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:13:09,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:13:10,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-12-06 18:13:10,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:13:10,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:10,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899564211] [2021-12-06 18:13:10,256 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:13:10,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951650036] [2021-12-06 18:13:10,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951650036] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:13:10,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:13:10,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:13:10,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985076116] [2021-12-06 18:13:10,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:13:10,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:13:10,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:10,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:13:10,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:10,257 INFO L87 Difference]: Start difference. First operand 7236 states and 9815 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:13:10,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:13:10,557 INFO L93 Difference]: Finished difference Result 14439 states and 19600 transitions. [2021-12-06 18:13:10,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:13:10,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 317 [2021-12-06 18:13:10,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:13:10,576 INFO L225 Difference]: With dead ends: 14439 [2021-12-06 18:13:10,576 INFO L226 Difference]: Without dead ends: 7236 [2021-12-06 18:13:10,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:10,591 INFO L933 BasicCegarLoop]: 3839 mSDtfsCounter, 3653 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3653 SdHoareTripleChecker+Valid, 3839 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:13:10,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3653 Valid, 3839 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:13:10,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2021-12-06 18:13:10,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 7236. [2021-12-06 18:13:10,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 4952 states have (on average 1.2403069466882068) internal successors, (6142), 5013 states have internal predecessors, (6142), 1835 states have call successors, (1835), 449 states have call predecessors, (1835), 448 states have return successors, (1835), 1825 states have call predecessors, (1835), 1835 states have call successors, (1835) [2021-12-06 18:13:10,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 9812 transitions. [2021-12-06 18:13:10,927 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 9812 transitions. Word has length 317 [2021-12-06 18:13:10,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:13:10,927 INFO L470 AbstractCegarLoop]: Abstraction has 7236 states and 9812 transitions. [2021-12-06 18:13:10,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:13:10,927 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 9812 transitions. [2021-12-06 18:13:10,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-12-06 18:13:10,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:13:10,933 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:10,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 18:13:11,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 18:13:11,134 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:13:11,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:11,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1977286517, now seen corresponding path program 1 times [2021-12-06 18:13:11,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:11,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798303310] [2021-12-06 18:13:11,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:11,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:11,192 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:13:11,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183141468] [2021-12-06 18:13:11,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:11,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:11,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:13:11,193 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:13:11,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 18:13:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:11,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 4074 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:13:11,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:13:12,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-12-06 18:13:12,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:13:12,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:12,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798303310] [2021-12-06 18:13:12,174 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:13:12,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183141468] [2021-12-06 18:13:12,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183141468] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:13:12,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:13:12,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:13:12,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805095721] [2021-12-06 18:13:12,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:13:12,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:13:12,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:12,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:13:12,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:12,176 INFO L87 Difference]: Start difference. First operand 7236 states and 9812 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:13:12,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:13:12,757 INFO L93 Difference]: Finished difference Result 21626 states and 29341 transitions. [2021-12-06 18:13:12,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:13:12,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 318 [2021-12-06 18:13:12,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:13:12,794 INFO L225 Difference]: With dead ends: 21626 [2021-12-06 18:13:12,794 INFO L226 Difference]: Without dead ends: 14423 [2021-12-06 18:13:12,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:12,814 INFO L933 BasicCegarLoop]: 4845 mSDtfsCounter, 3652 mSDsluCounter, 3777 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3652 SdHoareTripleChecker+Valid, 8622 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:13:12,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3652 Valid, 8622 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:13:12,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14423 states. [2021-12-06 18:13:13,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14423 to 14419. [2021-12-06 18:13:13,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14419 states, 9872 states have (on average 1.2407820097244733) internal successors, (12249), 10000 states have internal predecessors, (12249), 3652 states have call successors, (3652), 898 states have call predecessors, (3652), 894 states have return successors, (3652), 3624 states have call predecessors, (3652), 3652 states have call successors, (3652) [2021-12-06 18:13:13,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14419 states to 14419 states and 19553 transitions. [2021-12-06 18:13:13,486 INFO L78 Accepts]: Start accepts. Automaton has 14419 states and 19553 transitions. Word has length 318 [2021-12-06 18:13:13,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:13:13,486 INFO L470 AbstractCegarLoop]: Abstraction has 14419 states and 19553 transitions. [2021-12-06 18:13:13,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-06 18:13:13,486 INFO L276 IsEmpty]: Start isEmpty. Operand 14419 states and 19553 transitions. [2021-12-06 18:13:13,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-12-06 18:13:13,491 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:13:13,492 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:13,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-06 18:13:13,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 18:13:13,693 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:13:13,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:13,694 INFO L85 PathProgramCache]: Analyzing trace with hash 2005915668, now seen corresponding path program 1 times [2021-12-06 18:13:13,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:13,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856988392] [2021-12-06 18:13:13,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:13,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:13,779 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:13:13,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452835553] [2021-12-06 18:13:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:13,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:13,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:13:13,780 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:13:13,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 18:13:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:14,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 4073 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:13:14,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:13:14,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2021-12-06 18:13:14,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:13:14,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:14,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856988392] [2021-12-06 18:13:14,631 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:13:14,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452835553] [2021-12-06 18:13:14,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452835553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:13:14,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:13:14,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:13:14,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891712546] [2021-12-06 18:13:14,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:13:14,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:13:14,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:14,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:13:14,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:14,633 INFO L87 Difference]: Start difference. First operand 14419 states and 19553 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-06 18:13:15,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:13:15,676 INFO L93 Difference]: Finished difference Result 34642 states and 46943 transitions. [2021-12-06 18:13:15,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:13:15,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 318 [2021-12-06 18:13:15,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:13:15,727 INFO L225 Difference]: With dead ends: 34642 [2021-12-06 18:13:15,727 INFO L226 Difference]: Without dead ends: 20256 [2021-12-06 18:13:15,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:15,759 INFO L933 BasicCegarLoop]: 5312 mSDtfsCounter, 2664 mSDsluCounter, 3722 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2664 SdHoareTripleChecker+Valid, 9034 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:13:15,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2664 Valid, 9034 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:13:15,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20256 states. [2021-12-06 18:13:16,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20256 to 20250. [2021-12-06 18:13:16,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20250 states, 13896 states have (on average 1.2406447898675879) internal successors, (17240), 14063 states have internal predecessors, (17240), 5068 states have call successors, (5068), 1290 states have call predecessors, (5068), 1285 states have return successors, (5068), 5030 states have call predecessors, (5068), 5068 states have call successors, (5068) [2021-12-06 18:13:16,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20250 states to 20250 states and 27376 transitions. [2021-12-06 18:13:16,711 INFO L78 Accepts]: Start accepts. Automaton has 20250 states and 27376 transitions. Word has length 318 [2021-12-06 18:13:16,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:13:16,712 INFO L470 AbstractCegarLoop]: Abstraction has 20250 states and 27376 transitions. [2021-12-06 18:13:16,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-06 18:13:16,712 INFO L276 IsEmpty]: Start isEmpty. Operand 20250 states and 27376 transitions. [2021-12-06 18:13:16,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2021-12-06 18:13:16,719 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:13:16,719 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 14, 14, 14, 14, 14, 14, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:16,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-06 18:13:16,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:16,921 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:13:16,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:16,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1082601343, now seen corresponding path program 1 times [2021-12-06 18:13:16,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:16,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501131889] [2021-12-06 18:13:16,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:16,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:17,015 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:13:17,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984427735] [2021-12-06 18:13:17,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:17,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:17,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:13:17,016 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:13:17,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 18:13:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:17,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 4267 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:13:17,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:13:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-12-06 18:13:17,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:13:17,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:17,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501131889] [2021-12-06 18:13:17,950 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:13:17,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984427735] [2021-12-06 18:13:17,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984427735] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:13:17,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:13:17,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:13:17,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128036507] [2021-12-06 18:13:17,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:13:17,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:13:17,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:17,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:13:17,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:17,951 INFO L87 Difference]: Start difference. First operand 20250 states and 27376 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-06 18:13:19,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:13:19,171 INFO L93 Difference]: Finished difference Result 47320 states and 63920 transitions. [2021-12-06 18:13:19,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:13:19,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 370 [2021-12-06 18:13:19,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:13:19,248 INFO L225 Difference]: With dead ends: 47320 [2021-12-06 18:13:19,248 INFO L226 Difference]: Without dead ends: 27103 [2021-12-06 18:13:19,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:19,292 INFO L933 BasicCegarLoop]: 4721 mSDtfsCounter, 3351 mSDsluCounter, 3332 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3351 SdHoareTripleChecker+Valid, 8053 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:13:19,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3351 Valid, 8053 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:13:19,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27103 states. [2021-12-06 18:13:20,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27103 to 27097. [2021-12-06 18:13:20,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27097 states, 18672 states have (on average 1.24175235646958) internal successors, (23186), 18888 states have internal predecessors, (23186), 6684 states have call successors, (6684), 1746 states have call predecessors, (6684), 1740 states have return successors, (6684), 6634 states have call predecessors, (6684), 6684 states have call successors, (6684) [2021-12-06 18:13:20,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27097 states to 27097 states and 36554 transitions. [2021-12-06 18:13:20,654 INFO L78 Accepts]: Start accepts. Automaton has 27097 states and 36554 transitions. Word has length 370 [2021-12-06 18:13:20,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:13:20,654 INFO L470 AbstractCegarLoop]: Abstraction has 27097 states and 36554 transitions. [2021-12-06 18:13:20,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-06 18:13:20,655 INFO L276 IsEmpty]: Start isEmpty. Operand 27097 states and 36554 transitions. [2021-12-06 18:13:20,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-12-06 18:13:20,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:13:20,662 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 14, 14, 14, 14, 14, 14, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:20,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 18:13:20,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:20,864 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:13:20,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:20,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1841468737, now seen corresponding path program 1 times [2021-12-06 18:13:20,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:20,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985779637] [2021-12-06 18:13:20,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:20,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:20,960 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:13:20,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490316644] [2021-12-06 18:13:20,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:20,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:20,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:13:20,961 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:13:20,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 18:13:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:21,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 4338 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:13:21,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:13:21,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 947 trivial. 0 not checked. [2021-12-06 18:13:21,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:13:21,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:21,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985779637] [2021-12-06 18:13:21,903 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:13:21,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490316644] [2021-12-06 18:13:21,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490316644] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:13:21,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:13:21,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:13:21,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594910840] [2021-12-06 18:13:21,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:13:21,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:13:21,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:21,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:13:21,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:21,905 INFO L87 Difference]: Start difference. First operand 27097 states and 36554 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-12-06 18:13:23,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:13:23,540 INFO L93 Difference]: Finished difference Result 60000 states and 80929 transitions. [2021-12-06 18:13:23,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:13:23,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 402 [2021-12-06 18:13:23,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:13:23,628 INFO L225 Difference]: With dead ends: 60000 [2021-12-06 18:13:23,628 INFO L226 Difference]: Without dead ends: 32936 [2021-12-06 18:13:23,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:23,684 INFO L933 BasicCegarLoop]: 5207 mSDtfsCounter, 3708 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3708 SdHoareTripleChecker+Valid, 7876 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:13:23,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3708 Valid, 7876 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:13:23,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32936 states. [2021-12-06 18:13:25,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32936 to 32930. [2021-12-06 18:13:25,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32930 states, 22692 states have (on average 1.2420676890534108) internal successors, (28185), 22947 states have internal predecessors, (28185), 8098 states have call successors, (8098), 2146 states have call predecessors, (8098), 2139 states have return successors, (8098), 8038 states have call predecessors, (8098), 8098 states have call successors, (8098) [2021-12-06 18:13:25,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32930 states to 32930 states and 44381 transitions. [2021-12-06 18:13:25,254 INFO L78 Accepts]: Start accepts. Automaton has 32930 states and 44381 transitions. Word has length 402 [2021-12-06 18:13:25,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:13:25,254 INFO L470 AbstractCegarLoop]: Abstraction has 32930 states and 44381 transitions. [2021-12-06 18:13:25,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-12-06 18:13:25,255 INFO L276 IsEmpty]: Start isEmpty. Operand 32930 states and 44381 transitions. [2021-12-06 18:13:25,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2021-12-06 18:13:25,262 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:13:25,262 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 14, 14, 14, 14, 14, 14, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:25,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-06 18:13:25,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:25,464 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:13:25,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:25,465 INFO L85 PathProgramCache]: Analyzing trace with hash -252109699, now seen corresponding path program 1 times [2021-12-06 18:13:25,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:25,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827157649] [2021-12-06 18:13:25,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:25,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:25,569 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:13:25,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280805930] [2021-12-06 18:13:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:25,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:25,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:13:25,570 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:13:25,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-06 18:13:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:26,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 4365 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:13:26,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:13:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1414 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 1188 trivial. 0 not checked. [2021-12-06 18:13:26,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:13:26,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:26,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827157649] [2021-12-06 18:13:26,524 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:13:26,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280805930] [2021-12-06 18:13:26,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280805930] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:13:26,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:13:26,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:13:26,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610193262] [2021-12-06 18:13:26,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:13:26,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:13:26,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:26,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:13:26,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:26,526 INFO L87 Difference]: Start difference. First operand 32930 states and 44381 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-12-06 18:13:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:13:28,249 INFO L93 Difference]: Finished difference Result 71036 states and 95673 transitions. [2021-12-06 18:13:28,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:13:28,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 424 [2021-12-06 18:13:28,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:13:28,351 INFO L225 Difference]: With dead ends: 71036 [2021-12-06 18:13:28,351 INFO L226 Difference]: Without dead ends: 38139 [2021-12-06 18:13:28,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:28,419 INFO L933 BasicCegarLoop]: 4801 mSDtfsCounter, 3316 mSDsluCounter, 3358 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3316 SdHoareTripleChecker+Valid, 8159 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:13:28,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3316 Valid, 8159 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:13:28,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38139 states. [2021-12-06 18:13:30,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38139 to 38133. [2021-12-06 18:13:30,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38133 states, 26316 states have (on average 1.2422100623195014) internal successors, (32690), 26610 states have internal predecessors, (32690), 9318 states have call successors, (9318), 2506 states have call predecessors, (9318), 2498 states have return successors, (9318), 9248 states have call predecessors, (9318), 9318 states have call successors, (9318) [2021-12-06 18:13:30,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38133 states to 38133 states and 51326 transitions. [2021-12-06 18:13:30,540 INFO L78 Accepts]: Start accepts. Automaton has 38133 states and 51326 transitions. Word has length 424 [2021-12-06 18:13:30,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:13:30,540 INFO L470 AbstractCegarLoop]: Abstraction has 38133 states and 51326 transitions. [2021-12-06 18:13:30,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-12-06 18:13:30,540 INFO L276 IsEmpty]: Start isEmpty. Operand 38133 states and 51326 transitions. [2021-12-06 18:13:30,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-12-06 18:13:30,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:13:30,548 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 14, 14, 14, 14, 14, 14, 9, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:30,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-06 18:13:30,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 18:13:30,750 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:13:30,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:30,751 INFO L85 PathProgramCache]: Analyzing trace with hash -203877475, now seen corresponding path program 1 times [2021-12-06 18:13:30,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:30,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423374113] [2021-12-06 18:13:30,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:30,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:30,840 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:13:30,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626720747] [2021-12-06 18:13:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:30,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:30,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:13:30,841 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:13:30,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-06 18:13:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:31,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 4378 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:13:31,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:13:31,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1450 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 1188 trivial. 0 not checked. [2021-12-06 18:13:31,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:13:31,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:31,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423374113] [2021-12-06 18:13:31,786 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:13:31,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626720747] [2021-12-06 18:13:31,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626720747] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:13:31,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:13:31,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:13:31,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261034758] [2021-12-06 18:13:31,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:13:31,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:13:31,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:31,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:13:31,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:31,787 INFO L87 Difference]: Start difference. First operand 38133 states and 51326 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-12-06 18:13:33,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:13:33,747 INFO L93 Difference]: Finished difference Result 81190 states and 109247 transitions. [2021-12-06 18:13:33,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:13:33,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 433 [2021-12-06 18:13:33,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:13:33,865 INFO L225 Difference]: With dead ends: 81190 [2021-12-06 18:13:33,865 INFO L226 Difference]: Without dead ends: 43090 [2021-12-06 18:13:33,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:33,940 INFO L933 BasicCegarLoop]: 6264 mSDtfsCounter, 3358 mSDsluCounter, 3307 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3358 SdHoareTripleChecker+Valid, 9571 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:13:33,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3358 Valid, 9571 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:13:33,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43090 states. [2021-12-06 18:13:36,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43090 to 43084. [2021-12-06 18:13:36,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43084 states, 29746 states have (on average 1.2406037786593156) internal successors, (36903), 30079 states have internal predecessors, (36903), 10506 states have call successors, (10506), 2840 states have call predecessors, (10506), 2831 states have return successors, (10506), 10426 states have call predecessors, (10506), 10506 states have call successors, (10506) [2021-12-06 18:13:36,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43084 states to 43084 states and 57915 transitions. [2021-12-06 18:13:36,359 INFO L78 Accepts]: Start accepts. Automaton has 43084 states and 57915 transitions. Word has length 433 [2021-12-06 18:13:36,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:13:36,360 INFO L470 AbstractCegarLoop]: Abstraction has 43084 states and 57915 transitions. [2021-12-06 18:13:36,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-12-06 18:13:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 43084 states and 57915 transitions. [2021-12-06 18:13:36,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-12-06 18:13:36,372 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:13:36,372 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 14, 14, 14, 14, 14, 14, 9, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:36,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-06 18:13:36,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 18:13:36,574 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:13:36,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:36,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1955206619, now seen corresponding path program 1 times [2021-12-06 18:13:36,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:36,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778529844] [2021-12-06 18:13:36,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:36,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:36,684 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:13:36,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702546406] [2021-12-06 18:13:36,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:36,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:36,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:13:36,685 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:13:36,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-06 18:13:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:37,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 4379 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:13:37,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:13:37,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1450 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 1188 trivial. 0 not checked. [2021-12-06 18:13:37,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:13:37,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:37,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778529844] [2021-12-06 18:13:37,681 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:13:37,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702546406] [2021-12-06 18:13:37,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702546406] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:13:37,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:13:37,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:13:37,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479635043] [2021-12-06 18:13:37,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:13:37,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:13:37,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:37,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:13:37,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:37,683 INFO L87 Difference]: Start difference. First operand 43084 states and 57915 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-12-06 18:13:39,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:13:39,936 INFO L93 Difference]: Finished difference Result 91086 states and 122421 transitions. [2021-12-06 18:13:39,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:13:39,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 433 [2021-12-06 18:13:39,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:13:40,074 INFO L225 Difference]: With dead ends: 91086 [2021-12-06 18:13:40,074 INFO L226 Difference]: Without dead ends: 48035 [2021-12-06 18:13:40,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:13:40,165 INFO L933 BasicCegarLoop]: 5798 mSDtfsCounter, 3277 mSDsluCounter, 3371 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3277 SdHoareTripleChecker+Valid, 9169 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:13:40,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3277 Valid, 9169 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:13:40,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48035 states. [2021-12-06 18:13:42,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48035 to 48029. [2021-12-06 18:13:42,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48029 states, 33172 states have (on average 1.240443747739057) internal successors, (41148), 33544 states have internal predecessors, (41148), 11694 states have call successors, (11694), 3172 states have call predecessors, (11694), 3162 states have return successors, (11694), 11604 states have call predecessors, (11694), 11694 states have call successors, (11694) [2021-12-06 18:13:42,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48029 states to 48029 states and 64536 transitions. [2021-12-06 18:13:42,813 INFO L78 Accepts]: Start accepts. Automaton has 48029 states and 64536 transitions. Word has length 433 [2021-12-06 18:13:42,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:13:42,814 INFO L470 AbstractCegarLoop]: Abstraction has 48029 states and 64536 transitions. [2021-12-06 18:13:42,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-12-06 18:13:42,814 INFO L276 IsEmpty]: Start isEmpty. Operand 48029 states and 64536 transitions. [2021-12-06 18:13:42,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2021-12-06 18:13:42,828 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:13:42,829 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 14, 14, 14, 14, 14, 14, 11, 11, 11, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:42,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-06 18:13:43,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:43,030 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:13:43,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:43,032 INFO L85 PathProgramCache]: Analyzing trace with hash -532861501, now seen corresponding path program 1 times [2021-12-06 18:13:43,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:43,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886880486] [2021-12-06 18:13:43,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:43,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:13:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:13:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:13:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:13:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 18:13:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:13:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 18:13:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:13:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 18:13:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:13:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 18:13:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:13:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 18:13:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:13:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 18:13:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:13:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 18:13:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:13:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 18:13:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:13:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:13:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:13:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 18:13:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:13:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 18:13:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:13:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 18:13:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:13:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 18:13:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 18:13:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-06 18:13:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-06 18:13:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-06 18:13:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-06 18:13:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:13:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-06 18:13:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-06 18:13:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-06 18:13:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:13:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:13:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 18:13:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-12-06 18:13:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:13:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:13:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 18:13:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-06 18:13:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-12-06 18:13:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-06 18:13:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-12-06 18:13:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-12-06 18:13:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:13:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-06 18:13:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2021-12-06 18:13:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-12-06 18:13:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-12-06 18:13:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:13:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2021-12-06 18:13:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2021-12-06 18:13:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2021-12-06 18:13:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-12-06 18:13:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:13:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2021-12-06 18:13:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2021-12-06 18:13:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 1637 trivial. 0 not checked. [2021-12-06 18:13:43,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:43,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886880486] [2021-12-06 18:13:43,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886880486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:13:43,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:13:43,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:13:43,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142200787] [2021-12-06 18:13:43,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:13:43,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:13:43,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:43,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:13:43,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:13:43,761 INFO L87 Difference]: Start difference. First operand 48029 states and 64536 transitions. Second operand has 5 states, 5 states have (on average 41.2) internal successors, (206), 3 states have internal predecessors, (206), 3 states have call successors, (46), 4 states have call predecessors, (46), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-12-06 18:13:49,488 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:13:52,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:13:58,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:13:58,390 INFO L93 Difference]: Finished difference Result 111904 states and 152603 transitions. [2021-12-06 18:13:58,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:13:58,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 3 states have internal predecessors, (206), 3 states have call successors, (46), 4 states have call predecessors, (46), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 491 [2021-12-06 18:13:58,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:13:58,566 INFO L225 Difference]: With dead ends: 111904 [2021-12-06 18:13:58,566 INFO L226 Difference]: Without dead ends: 63908 [2021-12-06 18:13:58,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:13:58,657 INFO L933 BasicCegarLoop]: 4889 mSDtfsCounter, 4510 mSDsluCounter, 6390 mSDsCounter, 0 mSdLazyCounter, 4663 mSolverCounterSat, 3217 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4943 SdHoareTripleChecker+Valid, 11279 SdHoareTripleChecker+Invalid, 7881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3217 IncrementalHoareTripleChecker+Valid, 4663 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:13:58,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4943 Valid, 11279 Invalid, 7881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3217 Valid, 4663 Invalid, 1 Unknown, 0 Unchecked, 11.5s Time] [2021-12-06 18:13:58,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63908 states. [2021-12-06 18:14:01,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63908 to 52950. [2021-12-06 18:14:01,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52950 states, 36574 states have (on average 1.2402526384863564) internal successors, (45361), 36985 states have internal predecessors, (45361), 12882 states have call successors, (12882), 3504 states have call predecessors, (12882), 3493 states have return successors, (12882), 12782 states have call predecessors, (12882), 12882 states have call successors, (12882) [2021-12-06 18:14:01,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52950 states to 52950 states and 71125 transitions. [2021-12-06 18:14:01,529 INFO L78 Accepts]: Start accepts. Automaton has 52950 states and 71125 transitions. Word has length 491 [2021-12-06 18:14:01,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:14:01,530 INFO L470 AbstractCegarLoop]: Abstraction has 52950 states and 71125 transitions. [2021-12-06 18:14:01,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 3 states have internal predecessors, (206), 3 states have call successors, (46), 4 states have call predecessors, (46), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-12-06 18:14:01,530 INFO L276 IsEmpty]: Start isEmpty. Operand 52950 states and 71125 transitions. [2021-12-06 18:14:01,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2021-12-06 18:14:01,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:14:01,542 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 14, 14, 14, 14, 14, 14, 11, 11, 11, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:14:01,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 18:14:01,542 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:14:01,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:14:01,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1626222593, now seen corresponding path program 1 times [2021-12-06 18:14:01,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:14:01,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723874899] [2021-12-06 18:14:01,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:14:01,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:14:01,616 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:14:01,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941676537] [2021-12-06 18:14:01,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:14:01,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:14:01,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:14:01,618 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:14:01,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-06 18:14:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:14:02,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 4677 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:14:02,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:14:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 1612 trivial. 0 not checked. [2021-12-06 18:14:02,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:14:02,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:14:02,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723874899] [2021-12-06 18:14:02,666 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:14:02,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941676537] [2021-12-06 18:14:02,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941676537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:14:02,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:14:02,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:14:02,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676952630] [2021-12-06 18:14:02,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:14:02,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:14:02,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:14:02,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:14:02,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:14:02,667 INFO L87 Difference]: Start difference. First operand 52950 states and 71125 transitions. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 4 states have internal predecessors, (189), 3 states have call successors, (45), 3 states have call predecessors, (45), 4 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2021-12-06 18:14:05,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:14:05,782 INFO L93 Difference]: Finished difference Result 116933 states and 157114 transitions. [2021-12-06 18:14:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:14:05,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 4 states have internal predecessors, (189), 3 states have call successors, (45), 3 states have call predecessors, (45), 4 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) Word has length 491 [2021-12-06 18:14:05,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:14:05,960 INFO L225 Difference]: With dead ends: 116933 [2021-12-06 18:14:05,960 INFO L226 Difference]: Without dead ends: 64016 [2021-12-06 18:14:06,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:14:06,070 INFO L933 BasicCegarLoop]: 6526 mSDtfsCounter, 3010 mSDsluCounter, 16707 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3010 SdHoareTripleChecker+Valid, 23233 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:14:06,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3010 Valid, 23233 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:14:06,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64016 states. [2021-12-06 18:14:09,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64016 to 63994. [2021-12-06 18:14:09,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63994 states, 44180 states have (on average 1.2399954730647351) internal successors, (54783), 44691 states have internal predecessors, (54783), 15568 states have call successors, (15568), 4254 states have call predecessors, (15568), 4245 states have return successors, (15572), 15450 states have call predecessors, (15572), 15568 states have call successors, (15572) [2021-12-06 18:14:09,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63994 states to 63994 states and 85923 transitions. [2021-12-06 18:14:09,406 INFO L78 Accepts]: Start accepts. Automaton has 63994 states and 85923 transitions. Word has length 491 [2021-12-06 18:14:09,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:14:09,406 INFO L470 AbstractCegarLoop]: Abstraction has 63994 states and 85923 transitions. [2021-12-06 18:14:09,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 4 states have internal predecessors, (189), 3 states have call successors, (45), 3 states have call predecessors, (45), 4 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2021-12-06 18:14:09,406 INFO L276 IsEmpty]: Start isEmpty. Operand 63994 states and 85923 transitions. [2021-12-06 18:14:09,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2021-12-06 18:14:09,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:14:09,420 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 14, 14, 14, 14, 14, 14, 11, 11, 11, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:14:09,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-12-06 18:14:09,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:14:09,622 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:14:09,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:14:09,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2134602281, now seen corresponding path program 1 times [2021-12-06 18:14:09,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:14:09,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414166100] [2021-12-06 18:14:09,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:14:09,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:14:09,734 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:14:09,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1561011176] [2021-12-06 18:14:09,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:14:09,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:14:09,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:14:09,735 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:14:09,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-06 18:14:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:14:10,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 4678 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:14:10,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:14:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 1612 trivial. 0 not checked. [2021-12-06 18:14:10,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:14:10,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:14:10,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414166100] [2021-12-06 18:14:10,902 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:14:10,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561011176] [2021-12-06 18:14:10,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561011176] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:14:10,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:14:10,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:14:10,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582407932] [2021-12-06 18:14:10,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:14:10,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:14:10,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:14:10,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:14:10,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:14:10,904 INFO L87 Difference]: Start difference. First operand 63994 states and 85923 transitions. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 4 states have internal predecessors, (190), 3 states have call successors, (45), 3 states have call predecessors, (45), 4 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2021-12-06 18:14:14,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:14:14,410 INFO L93 Difference]: Finished difference Result 134162 states and 179947 transitions. [2021-12-06 18:14:14,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:14:14,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 4 states have internal predecessors, (190), 3 states have call successors, (45), 3 states have call predecessors, (45), 4 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) Word has length 492 [2021-12-06 18:14:14,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:14:14,605 INFO L225 Difference]: With dead ends: 134162 [2021-12-06 18:14:14,605 INFO L226 Difference]: Without dead ends: 70201 [2021-12-06 18:14:14,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:14:14,721 INFO L933 BasicCegarLoop]: 4699 mSDtfsCounter, 3540 mSDsluCounter, 12714 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3540 SdHoareTripleChecker+Valid, 17413 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:14:14,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3540 Valid, 17413 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:14:14,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70201 states. [2021-12-06 18:14:18,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70201 to 70179. [2021-12-06 18:14:18,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70179 states, 48446 states have (on average 1.2396069850968088) internal successors, (60054), 49008 states have internal predecessors, (60054), 16982 states have call successors, (16982), 4760 states have call predecessors, (16982), 4750 states have return successors, (16986), 16850 states have call predecessors, (16986), 16982 states have call successors, (16986) [2021-12-06 18:14:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70179 states to 70179 states and 94022 transitions. [2021-12-06 18:14:18,445 INFO L78 Accepts]: Start accepts. Automaton has 70179 states and 94022 transitions. Word has length 492 [2021-12-06 18:14:18,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:14:18,445 INFO L470 AbstractCegarLoop]: Abstraction has 70179 states and 94022 transitions. [2021-12-06 18:14:18,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 4 states have internal predecessors, (190), 3 states have call successors, (45), 3 states have call predecessors, (45), 4 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2021-12-06 18:14:18,446 INFO L276 IsEmpty]: Start isEmpty. Operand 70179 states and 94022 transitions. [2021-12-06 18:14:18,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2021-12-06 18:14:18,462 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:14:18,462 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 14, 14, 14, 14, 14, 14, 11, 11, 11, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:14:18,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-12-06 18:14:18,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:14:18,664 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:14:18,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:14:18,666 INFO L85 PathProgramCache]: Analyzing trace with hash -204582891, now seen corresponding path program 1 times [2021-12-06 18:14:18,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:14:18,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019519318] [2021-12-06 18:14:18,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:14:18,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:14:18,770 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:14:18,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010955696] [2021-12-06 18:14:18,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:14:18,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:14:18,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:14:18,771 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:14:18,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-06 18:14:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:14:19,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 4749 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:14:19,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:14:19,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1945 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 1615 trivial. 0 not checked. [2021-12-06 18:14:19,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:14:19,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:14:19,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019519318] [2021-12-06 18:14:19,804 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:14:19,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010955696] [2021-12-06 18:14:19,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010955696] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:14:19,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:14:19,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:14:19,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071935247] [2021-12-06 18:14:19,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:14:19,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:14:19,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:14:19,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:14:19,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:14:19,806 INFO L87 Difference]: Start difference. First operand 70179 states and 94022 transitions. Second operand has 5 states, 5 states have (on average 42.8) internal successors, (214), 4 states have internal predecessors, (214), 3 states have call successors, (48), 3 states have call predecessors, (48), 4 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2021-12-06 18:14:23,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:14:23,725 INFO L93 Difference]: Finished difference Result 145304 states and 194687 transitions. [2021-12-06 18:14:23,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:14:23,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 4 states have internal predecessors, (214), 3 states have call successors, (48), 3 states have call predecessors, (48), 4 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) Word has length 524 [2021-12-06 18:14:23,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:14:23,939 INFO L225 Difference]: With dead ends: 145304 [2021-12-06 18:14:23,940 INFO L226 Difference]: Without dead ends: 75158 [2021-12-06 18:14:24,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:14:24,073 INFO L933 BasicCegarLoop]: 6381 mSDtfsCounter, 3336 mSDsluCounter, 16089 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3337 SdHoareTripleChecker+Valid, 22470 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:14:24,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3337 Valid, 22470 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:14:24,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75158 states. [2021-12-06 18:14:27,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75158 to 75136. [2021-12-06 18:14:27,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75136 states, 51880 states have (on average 1.239225134926754) internal successors, (64291), 52481 states have internal predecessors, (64291), 18170 states have call successors, (18170), 5092 states have call predecessors, (18170), 5085 states have return successors, (18178), 18032 states have call predecessors, (18178), 18170 states have call successors, (18178) [2021-12-06 18:14:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75136 states to 75136 states and 100639 transitions. [2021-12-06 18:14:28,183 INFO L78 Accepts]: Start accepts. Automaton has 75136 states and 100639 transitions. Word has length 524 [2021-12-06 18:14:28,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:14:28,184 INFO L470 AbstractCegarLoop]: Abstraction has 75136 states and 100639 transitions. [2021-12-06 18:14:28,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 4 states have internal predecessors, (214), 3 states have call successors, (48), 3 states have call predecessors, (48), 4 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2021-12-06 18:14:28,184 INFO L276 IsEmpty]: Start isEmpty. Operand 75136 states and 100639 transitions. [2021-12-06 18:14:28,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2021-12-06 18:14:28,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:14:28,206 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 14, 14, 14, 14, 14, 14, 11, 11, 11, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:14:28,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-12-06 18:14:28,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-06 18:14:28,408 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:14:28,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:14:28,409 INFO L85 PathProgramCache]: Analyzing trace with hash 2104829794, now seen corresponding path program 1 times [2021-12-06 18:14:28,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:14:28,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854434962] [2021-12-06 18:14:28,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:14:28,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:14:28,531 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:14:28,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122775890] [2021-12-06 18:14:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:14:28,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:14:28,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:14:28,532 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:14:28,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-06 18:14:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:14:29,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 4750 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:14:29,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:14:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1945 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 1615 trivial. 0 not checked. [2021-12-06 18:14:29,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:14:29,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:14:29,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854434962] [2021-12-06 18:14:29,682 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:14:29,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122775890] [2021-12-06 18:14:29,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122775890] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:14:29,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:14:29,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:14:29,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196927603] [2021-12-06 18:14:29,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:14:29,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:14:29,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:14:29,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:14:29,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:14:29,684 INFO L87 Difference]: Start difference. First operand 75136 states and 100639 transitions. Second operand has 5 states, 5 states have (on average 43.0) internal successors, (215), 4 states have internal predecessors, (215), 3 states have call successors, (48), 3 states have call predecessors, (48), 4 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2021-12-06 18:14:33,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:14:33,588 INFO L93 Difference]: Finished difference Result 150945 states and 202028 transitions. [2021-12-06 18:14:33,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:14:33,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 4 states have internal predecessors, (215), 3 states have call successors, (48), 3 states have call predecessors, (48), 4 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) Word has length 525 [2021-12-06 18:14:33,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:14:33,792 INFO L225 Difference]: With dead ends: 150945 [2021-12-06 18:14:33,792 INFO L226 Difference]: Without dead ends: 75842 [2021-12-06 18:14:33,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:14:33,928 INFO L933 BasicCegarLoop]: 4684 mSDtfsCounter, 3345 mSDsluCounter, 12696 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3345 SdHoareTripleChecker+Valid, 17380 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:14:33,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3345 Valid, 17380 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:14:33,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75842 states. [2021-12-06 18:14:37,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75842 to 75820. [2021-12-06 18:14:37,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75820 states, 52332 states have (on average 1.238305434533364) internal successors, (64803), 52943 states have internal predecessors, (64803), 18298 states have call successors, (18298), 5196 states have call predecessors, (18298), 5189 states have return successors, (18306), 18158 states have call predecessors, (18306), 18298 states have call successors, (18306) [2021-12-06 18:14:38,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75820 states to 75820 states and 101407 transitions. [2021-12-06 18:14:38,176 INFO L78 Accepts]: Start accepts. Automaton has 75820 states and 101407 transitions. Word has length 525 [2021-12-06 18:14:38,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:14:38,177 INFO L470 AbstractCegarLoop]: Abstraction has 75820 states and 101407 transitions. [2021-12-06 18:14:38,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 4 states have internal predecessors, (215), 3 states have call successors, (48), 3 states have call predecessors, (48), 4 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2021-12-06 18:14:38,177 INFO L276 IsEmpty]: Start isEmpty. Operand 75820 states and 101407 transitions. [2021-12-06 18:14:38,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2021-12-06 18:14:38,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:14:38,195 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 14, 14, 14, 14, 14, 14, 13, 13, 13, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:14:38,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-06 18:14:38,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-06 18:14:38,397 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:14:38,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:14:38,398 INFO L85 PathProgramCache]: Analyzing trace with hash -154312431, now seen corresponding path program 1 times [2021-12-06 18:14:38,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:14:38,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023342876] [2021-12-06 18:14:38,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:14:38,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:14:38,514 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:14:38,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421221501] [2021-12-06 18:14:38,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:14:38,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:14:38,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:14:38,515 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:14:38,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-06 18:14:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:14:39,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 5263 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:14:39,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:14:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1969 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 1833 trivial. 0 not checked. [2021-12-06 18:14:39,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:14:39,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:14:39,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023342876] [2021-12-06 18:14:39,682 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:14:39,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421221501] [2021-12-06 18:14:39,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421221501] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:14:39,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:14:39,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:14:39,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137474699] [2021-12-06 18:14:39,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:14:39,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:14:39,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:14:39,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:14:39,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:14:39,684 INFO L87 Difference]: Start difference. First operand 75820 states and 101407 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 3 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2021-12-06 18:14:43,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:14:43,739 INFO L93 Difference]: Finished difference Result 156558 states and 209417 transitions. [2021-12-06 18:14:43,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:14:43,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 3 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 571 [2021-12-06 18:14:43,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:14:43,968 INFO L225 Difference]: With dead ends: 156558 [2021-12-06 18:14:43,968 INFO L226 Difference]: Without dead ends: 80771 [2021-12-06 18:14:44,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:14:44,114 INFO L933 BasicCegarLoop]: 4693 mSDtfsCounter, 3543 mSDsluCounter, 3311 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3543 SdHoareTripleChecker+Valid, 8004 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:14:44,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3543 Valid, 8004 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:14:44,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80771 states. [2021-12-06 18:14:48,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80771 to 80765. [2021-12-06 18:14:48,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80765 states, 55758 states have (on average 1.2383514473259443) internal successors, (69048), 56408 states have internal predecessors, (69048), 19486 states have call successors, (19486), 5528 states have call predecessors, (19486), 5520 states have return successors, (19494), 19336 states have call predecessors, (19494), 19486 states have call successors, (19494) [2021-12-06 18:14:48,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80765 states to 80765 states and 108028 transitions. [2021-12-06 18:14:48,544 INFO L78 Accepts]: Start accepts. Automaton has 80765 states and 108028 transitions. Word has length 571 [2021-12-06 18:14:48,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:14:48,544 INFO L470 AbstractCegarLoop]: Abstraction has 80765 states and 108028 transitions. [2021-12-06 18:14:48,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 3 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2021-12-06 18:14:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand 80765 states and 108028 transitions. [2021-12-06 18:14:48,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2021-12-06 18:14:48,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:14:48,564 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 14, 14, 14, 14, 14, 14, 12, 12, 12, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:14:48,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-12-06 18:14:48,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:14:48,765 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:14:48,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:14:48,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1993541112, now seen corresponding path program 1 times [2021-12-06 18:14:48,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:14:48,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493638849] [2021-12-06 18:14:48,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:14:48,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:14:48,839 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:14:48,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028346070] [2021-12-06 18:14:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:14:48,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:14:48,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:14:48,840 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:14:48,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-06 18:14:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:14:49,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 4945 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:14:49,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:14:49,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2157 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2021-12-06 18:14:49,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:14:49,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:14:49,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493638849] [2021-12-06 18:14:49,941 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:14:49,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028346070] [2021-12-06 18:14:49,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028346070] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:14:49,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:14:49,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:14:49,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997563071] [2021-12-06 18:14:49,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:14:49,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:14:49,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:14:49,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:14:49,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:14:49,943 INFO L87 Difference]: Start difference. First operand 80765 states and 108028 transitions. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 4 states have internal predecessors, (213), 3 states have call successors, (50), 3 states have call predecessors, (50), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-12-06 18:14:54,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:14:54,509 INFO L93 Difference]: Finished difference Result 166468 states and 222719 transitions. [2021-12-06 18:14:54,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:14:54,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 4 states have internal predecessors, (213), 3 states have call successors, (50), 3 states have call predecessors, (50), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) Word has length 573 [2021-12-06 18:14:54,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:14:54,752 INFO L225 Difference]: With dead ends: 166468 [2021-12-06 18:14:54,752 INFO L226 Difference]: Without dead ends: 85736 [2021-12-06 18:14:54,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:14:54,904 INFO L933 BasicCegarLoop]: 6692 mSDtfsCounter, 3007 mSDsluCounter, 17039 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3007 SdHoareTripleChecker+Valid, 23731 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:14:54,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3007 Valid, 23731 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:14:54,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85736 states. [2021-12-06 18:14:59,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85736 to 80777. [2021-12-06 18:14:59,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80777 states, 55766 states have (on average 1.2383172542409353) internal successors, (69056), 56416 states have internal predecessors, (69056), 19486 states have call successors, (19486), 5528 states have call predecessors, (19486), 5524 states have return successors, (19498), 19340 states have call predecessors, (19498), 19486 states have call successors, (19498) [2021-12-06 18:14:59,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80777 states to 80777 states and 108040 transitions. [2021-12-06 18:14:59,526 INFO L78 Accepts]: Start accepts. Automaton has 80777 states and 108040 transitions. Word has length 573 [2021-12-06 18:14:59,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:14:59,527 INFO L470 AbstractCegarLoop]: Abstraction has 80777 states and 108040 transitions. [2021-12-06 18:14:59,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 4 states have internal predecessors, (213), 3 states have call successors, (50), 3 states have call predecessors, (50), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-12-06 18:14:59,527 INFO L276 IsEmpty]: Start isEmpty. Operand 80777 states and 108040 transitions. [2021-12-06 18:14:59,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2021-12-06 18:14:59,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:14:59,546 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 14, 14, 14, 14, 14, 14, 12, 12, 12, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:14:59,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-12-06 18:14:59,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:14:59,748 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:14:59,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:14:59,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1126873752, now seen corresponding path program 1 times [2021-12-06 18:14:59,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:14:59,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498493898] [2021-12-06 18:14:59,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:14:59,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:14:59,854 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:14:59,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1920559186] [2021-12-06 18:14:59,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:14:59,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:14:59,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:14:59,855 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:14:59,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-06 18:15:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:15:00,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 4946 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:15:00,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:15:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2158 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 2003 trivial. 0 not checked. [2021-12-06 18:15:00,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:15:00,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:15:00,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498493898] [2021-12-06 18:15:00,996 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:15:00,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920559186] [2021-12-06 18:15:00,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920559186] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:15:00,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:15:00,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:15:00,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693074943] [2021-12-06 18:15:00,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:15:00,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:15:00,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:15:00,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:15:00,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:15:00,998 INFO L87 Difference]: Start difference. First operand 80777 states and 108040 transitions. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 4 states have internal predecessors, (213), 3 states have call successors, (50), 3 states have call predecessors, (50), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-12-06 18:15:05,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:15:05,568 INFO L93 Difference]: Finished difference Result 166480 states and 222731 transitions. [2021-12-06 18:15:05,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:15:05,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 4 states have internal predecessors, (213), 3 states have call successors, (50), 3 states have call predecessors, (50), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) Word has length 574 [2021-12-06 18:15:05,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:15:05,802 INFO L225 Difference]: With dead ends: 166480 [2021-12-06 18:15:05,802 INFO L226 Difference]: Without dead ends: 85736 [2021-12-06 18:15:05,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:15:05,959 INFO L933 BasicCegarLoop]: 4692 mSDtfsCounter, 3536 mSDsluCounter, 12700 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3536 SdHoareTripleChecker+Valid, 17392 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:15:05,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3536 Valid, 17392 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:15:06,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85736 states. [2021-12-06 18:15:10,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85736 to 85722. [2021-12-06 18:15:10,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85722 states, 59192 states have (on average 1.2389681037978104) internal successors, (73337), 59881 states have internal predecessors, (73337), 20674 states have call successors, (20674), 5860 states have call predecessors, (20674), 5855 states have return successors, (20686), 20518 states have call predecessors, (20686), 20674 states have call successors, (20686) [2021-12-06 18:15:10,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85722 states to 85722 states and 114697 transitions. [2021-12-06 18:15:10,630 INFO L78 Accepts]: Start accepts. Automaton has 85722 states and 114697 transitions. Word has length 574 [2021-12-06 18:15:10,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:15:10,631 INFO L470 AbstractCegarLoop]: Abstraction has 85722 states and 114697 transitions. [2021-12-06 18:15:10,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 4 states have internal predecessors, (213), 3 states have call successors, (50), 3 states have call predecessors, (50), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-12-06 18:15:10,631 INFO L276 IsEmpty]: Start isEmpty. Operand 85722 states and 114697 transitions. [2021-12-06 18:15:10,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2021-12-06 18:15:10,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:15:10,651 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 14, 14, 14, 14, 14, 14, 14, 14, 14, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:15:10,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-12-06 18:15:10,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:15:10,853 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:15:10,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:15:10,854 INFO L85 PathProgramCache]: Analyzing trace with hash -616003669, now seen corresponding path program 1 times [2021-12-06 18:15:10,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:15:10,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030110591] [2021-12-06 18:15:10,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:15:10,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:15:10,966 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:15:10,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163567914] [2021-12-06 18:15:10,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:15:10,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:15:10,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:15:10,967 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:15:10,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-06 18:15:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:15:11,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 5348 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 18:15:11,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:15:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2192 backedges. 833 proven. 0 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2021-12-06 18:15:12,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:15:12,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:15:12,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030110591] [2021-12-06 18:15:12,704 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:15:12,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163567914] [2021-12-06 18:15:12,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163567914] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:15:12,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:15:12,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:15:12,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278431271] [2021-12-06 18:15:12,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:15:12,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:15:12,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:15:12,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:15:12,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:15:12,705 INFO L87 Difference]: Start difference. First operand 85722 states and 114697 transitions. Second operand has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-12-06 18:15:21,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:15:21,249 INFO L93 Difference]: Finished difference Result 213250 states and 285284 transitions. [2021-12-06 18:15:21,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:15:21,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 607 [2021-12-06 18:15:21,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:15:21,630 INFO L225 Difference]: With dead ends: 213250 [2021-12-06 18:15:21,630 INFO L226 Difference]: Without dead ends: 125903 [2021-12-06 18:15:21,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:15:21,865 INFO L933 BasicCegarLoop]: 5118 mSDtfsCounter, 3034 mSDsluCounter, 7847 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3060 SdHoareTripleChecker+Valid, 12965 SdHoareTripleChecker+Invalid, 2423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:15:21,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3060 Valid, 12965 Invalid, 2423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2413 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 18:15:21,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125903 states. [2021-12-06 18:15:28,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125903 to 125853. [2021-12-06 18:15:28,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125853 states, 87534 states have (on average 1.2363538739232756) internal successors, (108223), 88500 states have internal predecessors, (108223), 29858 states have call successors, (29858), 8464 states have call predecessors, (29858), 8460 states have return successors, (29890), 29576 states have call predecessors, (29890), 29858 states have call successors, (29890) [2021-12-06 18:15:29,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125853 states to 125853 states and 167971 transitions. [2021-12-06 18:15:29,360 INFO L78 Accepts]: Start accepts. Automaton has 125853 states and 167971 transitions. Word has length 607 [2021-12-06 18:15:29,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:15:29,360 INFO L470 AbstractCegarLoop]: Abstraction has 125853 states and 167971 transitions. [2021-12-06 18:15:29,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-12-06 18:15:29,361 INFO L276 IsEmpty]: Start isEmpty. Operand 125853 states and 167971 transitions. [2021-12-06 18:15:29,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2021-12-06 18:15:29,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:15:29,385 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 15, 15, 15, 14, 14, 14, 14, 14, 14, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:15:29,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-12-06 18:15:29,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-12-06 18:15:29,587 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:15:29,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:15:29,588 INFO L85 PathProgramCache]: Analyzing trace with hash 816721221, now seen corresponding path program 1 times [2021-12-06 18:15:29,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:15:29,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291050148] [2021-12-06 18:15:29,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:15:29,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:15:29,702 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:15:29,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1846060966] [2021-12-06 18:15:29,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:15:29,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:15:29,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:15:29,703 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:15:29,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-06 18:15:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:15:30,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 5409 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:15:30,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:15:31,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2365 backedges. 991 proven. 0 refuted. 0 times theorem prover too weak. 1374 trivial. 0 not checked. [2021-12-06 18:15:31,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:15:31,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:15:31,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291050148] [2021-12-06 18:15:31,053 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:15:31,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846060966] [2021-12-06 18:15:31,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846060966] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:15:31,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:15:31,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:15:31,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671896559] [2021-12-06 18:15:31,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:15:31,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:15:31,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:15:31,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:15:31,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:15:31,054 INFO L87 Difference]: Start difference. First operand 125853 states and 167971 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 3 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-12-06 18:15:43,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:15:43,477 INFO L93 Difference]: Finished difference Result 376689 states and 502911 transitions. [2021-12-06 18:15:43,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:15:43,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 3 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 630 [2021-12-06 18:15:43,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:15:44,354 INFO L225 Difference]: With dead ends: 376689 [2021-12-06 18:15:44,354 INFO L226 Difference]: Without dead ends: 250869 [2021-12-06 18:15:44,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 628 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:15:44,638 INFO L933 BasicCegarLoop]: 5780 mSDtfsCounter, 3647 mSDsluCounter, 3826 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3647 SdHoareTripleChecker+Valid, 9606 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:15:44,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3647 Valid, 9606 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:15:44,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250869 states. [2021-12-06 18:15:58,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250869 to 250659. [2021-12-06 18:15:58,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250659 states, 174140 states have (on average 1.236418973239922) internal successors, (215310), 176236 states have internal predecessors, (215310), 59598 states have call successors, (59598), 16928 states have call predecessors, (59598), 16920 states have return successors, (59662), 58870 states have call predecessors, (59662), 59598 states have call successors, (59662) [2021-12-06 18:15:59,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250659 states to 250659 states and 334570 transitions. [2021-12-06 18:15:59,577 INFO L78 Accepts]: Start accepts. Automaton has 250659 states and 334570 transitions. Word has length 630 [2021-12-06 18:15:59,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:15:59,578 INFO L470 AbstractCegarLoop]: Abstraction has 250659 states and 334570 transitions. [2021-12-06 18:15:59,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 3 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-12-06 18:15:59,578 INFO L276 IsEmpty]: Start isEmpty. Operand 250659 states and 334570 transitions. [2021-12-06 18:15:59,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2021-12-06 18:15:59,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:15:59,624 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 16, 16, 16, 16, 16, 16, 13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:15:59,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-12-06 18:15:59,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:15:59,825 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:15:59,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:15:59,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1811222505, now seen corresponding path program 1 times [2021-12-06 18:15:59,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:15:59,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809010189] [2021-12-06 18:15:59,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:15:59,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:16:00,041 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:16:00,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [116682459] [2021-12-06 18:16:00,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:16:00,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:16:00,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:16:00,043 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:16:00,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-12-06 18:16:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:01,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 7818 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:16:01,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:16:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 1777 trivial. 0 not checked. [2021-12-06 18:16:01,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:16:01,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:16:01,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809010189] [2021-12-06 18:16:01,577 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:16:01,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116682459] [2021-12-06 18:16:01,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116682459] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:16:01,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:16:01,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:16:01,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213550133] [2021-12-06 18:16:01,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:16:01,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:16:01,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:16:01,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:16:01,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:16:01,579 INFO L87 Difference]: Start difference. First operand 250659 states and 334570 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2021-12-06 18:16:15,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:16:15,086 INFO L93 Difference]: Finished difference Result 502629 states and 671753 transitions. [2021-12-06 18:16:15,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:16:15,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) Word has length 656 [2021-12-06 18:16:15,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:16:15,927 INFO L225 Difference]: With dead ends: 502629 [2021-12-06 18:16:15,927 INFO L226 Difference]: Without dead ends: 252003 [2021-12-06 18:16:16,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:16:16,512 INFO L933 BasicCegarLoop]: 3839 mSDtfsCounter, 15 mSDsluCounter, 3823 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 7662 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:16:16,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 7662 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:16:16,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252003 states. [2021-12-06 18:16:30,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252003 to 251331. [2021-12-06 18:16:30,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251331 states, 174700 states have (on average 1.2363022323983972) internal successors, (215982), 176796 states have internal predecessors, (215982), 59710 states have call successors, (59710), 16928 states have call predecessors, (59710), 16920 states have return successors, (59774), 58982 states have call predecessors, (59774), 59710 states have call successors, (59774) [2021-12-06 18:16:31,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251331 states to 251331 states and 335466 transitions. [2021-12-06 18:16:31,229 INFO L78 Accepts]: Start accepts. Automaton has 251331 states and 335466 transitions. Word has length 656 [2021-12-06 18:16:31,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:16:31,229 INFO L470 AbstractCegarLoop]: Abstraction has 251331 states and 335466 transitions. [2021-12-06 18:16:31,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2021-12-06 18:16:31,230 INFO L276 IsEmpty]: Start isEmpty. Operand 251331 states and 335466 transitions. [2021-12-06 18:16:31,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2021-12-06 18:16:31,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:16:31,279 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 16, 16, 16, 14, 14, 14, 14, 14, 14, 9, 9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:16:31,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-12-06 18:16:31,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:16:31,481 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:16:31,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:16:31,483 INFO L85 PathProgramCache]: Analyzing trace with hash -78737849, now seen corresponding path program 1 times [2021-12-06 18:16:31,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:16:31,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401624300] [2021-12-06 18:16:31,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:16:31,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:16:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:16:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:16:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 18:16:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 18:16:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 18:16:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 18:16:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 18:16:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 18:16:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 18:16:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 18:16:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:16:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 18:16:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 18:16:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 18:16:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 18:16:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 18:16:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-06 18:16:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:31,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-06 18:16:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-06 18:16:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-06 18:16:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-06 18:16:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-12-06 18:16:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-06 18:16:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-06 18:16:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-06 18:16:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:16:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 18:16:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-12-06 18:16:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:16:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 18:16:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-12-06 18:16:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2021-12-06 18:16:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-06 18:16:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-06 18:16:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-12-06 18:16:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-12-06 18:16:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-12-06 18:16:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-12-06 18:16:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2021-12-06 18:16:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2021-12-06 18:16:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-12-06 18:16:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-12-06 18:16:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2021-12-06 18:16:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2021-12-06 18:16:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:16:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 18:16:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 18:16:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2021-12-06 18:16:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-12-06 18:16:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2021-12-06 18:16:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2021-12-06 18:16:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2021-12-06 18:16:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2021-12-06 18:16:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2021-12-06 18:16:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:16:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2021-12-06 18:16:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2021-12-06 18:16:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:32,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2536 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2507 trivial. 0 not checked. [2021-12-06 18:16:32,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:16:32,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401624300] [2021-12-06 18:16:32,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401624300] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:16:32,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:16:32,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:16:32,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703637483] [2021-12-06 18:16:32,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:16:32,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:16:32,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:16:32,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:16:32,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:16:32,290 INFO L87 Difference]: Start difference. First operand 251331 states and 335466 transitions. Second operand has 6 states, 6 states have (on average 38.0) internal successors, (228), 3 states have internal predecessors, (228), 3 states have call successors, (57), 5 states have call predecessors, (57), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-12-06 18:16:38,163 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:16:43,364 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:17:00,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:17:00,699 INFO L93 Difference]: Finished difference Result 553881 states and 748840 transitions. [2021-12-06 18:17:00,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:17:00,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 3 states have internal predecessors, (228), 3 states have call successors, (57), 5 states have call predecessors, (57), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 650 [2021-12-06 18:17:00,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:17:02,000 INFO L225 Difference]: With dead ends: 553881 [2021-12-06 18:17:02,000 INFO L226 Difference]: Without dead ends: 302583 [2021-12-06 18:17:02,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:17:02,541 INFO L933 BasicCegarLoop]: 3499 mSDtfsCounter, 2845 mSDsluCounter, 5493 mSDsCounter, 0 mSdLazyCounter, 3395 mSolverCounterSat, 2800 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3100 SdHoareTripleChecker+Valid, 8992 SdHoareTripleChecker+Invalid, 6197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2800 IncrementalHoareTripleChecker+Valid, 3395 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:17:02,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3100 Valid, 8992 Invalid, 6197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2800 Valid, 3395 Invalid, 2 Unknown, 0 Unchecked, 10.8s Time] [2021-12-06 18:17:02,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302583 states. [2021-12-06 18:17:17,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302583 to 252979. [2021-12-06 18:17:17,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252979 states, 175875 states have (on average 1.2347690120824448) internal successors, (217165), 177979 states have internal predecessors, (217165), 59735 states have call successors, (59735), 17368 states have call predecessors, (59735), 17368 states have return successors, (59807), 59007 states have call predecessors, (59807), 59735 states have call successors, (59807) [2021-12-06 18:17:19,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252979 states to 252979 states and 336707 transitions. [2021-12-06 18:17:19,055 INFO L78 Accepts]: Start accepts. Automaton has 252979 states and 336707 transitions. Word has length 650 [2021-12-06 18:17:19,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:17:19,055 INFO L470 AbstractCegarLoop]: Abstraction has 252979 states and 336707 transitions. [2021-12-06 18:17:19,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 3 states have internal predecessors, (228), 3 states have call successors, (57), 5 states have call predecessors, (57), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-12-06 18:17:19,055 INFO L276 IsEmpty]: Start isEmpty. Operand 252979 states and 336707 transitions. [2021-12-06 18:17:19,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2021-12-06 18:17:19,103 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:17:19,103 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 16, 16, 16, 14, 14, 14, 14, 14, 14, 9, 9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:17:19,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-06 18:17:19,104 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:17:19,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:19,104 INFO L85 PathProgramCache]: Analyzing trace with hash -105924537, now seen corresponding path program 2 times [2021-12-06 18:17:19,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:19,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988021483] [2021-12-06 18:17:19,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:19,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:17:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:17:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 18:17:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 18:17:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 18:17:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 18:17:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 18:17:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 18:17:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 18:17:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 18:17:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:17:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 18:17:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 18:17:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 18:17:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 18:17:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 18:17:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-06 18:17:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-06 18:17:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-06 18:17:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-06 18:17:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-06 18:17:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-06 18:17:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-12-06 18:17:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-06 18:17:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-06 18:17:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:17:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 18:17:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-12-06 18:17:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:17:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 18:17:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-12-06 18:17:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2021-12-06 18:17:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-06 18:17:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-06 18:17:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-12-06 18:17:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-12-06 18:17:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-12-06 18:17:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-12-06 18:17:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2021-12-06 18:17:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2021-12-06 18:17:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-12-06 18:17:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-12-06 18:17:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2021-12-06 18:17:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2021-12-06 18:17:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:17:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 18:17:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 18:17:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2021-12-06 18:17:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-12-06 18:17:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2021-12-06 18:17:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2021-12-06 18:17:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2021-12-06 18:17:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2021-12-06 18:17:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2021-12-06 18:17:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:17:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2021-12-06 18:17:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2021-12-06 18:17:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:19,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2536 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 2485 trivial. 0 not checked. [2021-12-06 18:17:19,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:19,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988021483] [2021-12-06 18:17:19,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988021483] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:19,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:17:19,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:17:19,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962133524] [2021-12-06 18:17:19,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:19,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:17:19,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:19,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:17:19,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:17:19,660 INFO L87 Difference]: Start difference. First operand 252979 states and 336707 transitions. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 3 states have internal predecessors, (230), 3 states have call successors, (58), 5 states have call predecessors, (58), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-12-06 18:17:27,271 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:17:29,778 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:17:37,479 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:17:40,322 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:18:13,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:18:13,743 INFO L93 Difference]: Finished difference Result 848767 states and 1151399 transitions. [2021-12-06 18:18:13,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 18:18:13,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 3 states have internal predecessors, (230), 3 states have call successors, (58), 5 states have call predecessors, (58), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 650 [2021-12-06 18:18:13,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:18:16,202 INFO L225 Difference]: With dead ends: 848767 [2021-12-06 18:18:16,202 INFO L226 Difference]: Without dead ends: 595877 [2021-12-06 18:18:16,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:18:16,826 INFO L933 BasicCegarLoop]: 6863 mSDtfsCounter, 5851 mSDsluCounter, 8208 mSDsCounter, 0 mSdLazyCounter, 5554 mSolverCounterSat, 3979 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6614 SdHoareTripleChecker+Valid, 15071 SdHoareTripleChecker+Invalid, 9535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3979 IncrementalHoareTripleChecker+Valid, 5554 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:18:16,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6614 Valid, 15071 Invalid, 9535 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3979 Valid, 5554 Invalid, 2 Unknown, 0 Unchecked, 18.9s Time] [2021-12-06 18:18:17,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595877 states. [2021-12-06 18:18:47,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595877 to 496667. [2021-12-06 18:18:47,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496667 states, 345595 states have (on average 1.234714043895311) internal successors, (426711), 349403 states have internal predecessors, (426711), 116959 states have call successors, (116959), 34112 states have call predecessors, (116959), 34112 states have return successors, (117103), 115903 states have call predecessors, (117103), 116959 states have call successors, (117103) [2021-12-06 18:18:50,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496667 states to 496667 states and 660773 transitions. [2021-12-06 18:18:50,162 INFO L78 Accepts]: Start accepts. Automaton has 496667 states and 660773 transitions. Word has length 650 [2021-12-06 18:18:50,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:18:50,163 INFO L470 AbstractCegarLoop]: Abstraction has 496667 states and 660773 transitions. [2021-12-06 18:18:50,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 3 states have internal predecessors, (230), 3 states have call successors, (58), 5 states have call predecessors, (58), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-12-06 18:18:50,163 INFO L276 IsEmpty]: Start isEmpty. Operand 496667 states and 660773 transitions. [2021-12-06 18:18:50,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2021-12-06 18:18:50,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:18:50,257 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 16, 16, 16, 14, 14, 14, 14, 14, 14, 9, 9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:18:50,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-06 18:18:50,257 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:18:50,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:18:50,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1283793591, now seen corresponding path program 1 times [2021-12-06 18:18:50,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:18:50,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955401721] [2021-12-06 18:18:50,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:18:50,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:18:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:18:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:18:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 18:18:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 18:18:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 18:18:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 18:18:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 18:18:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 18:18:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 18:18:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 18:18:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:18:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 18:18:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 18:18:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 18:18:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 18:18:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 18:18:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-06 18:18:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-06 18:18:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-06 18:18:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-06 18:18:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-06 18:18:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-06 18:18:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-12-06 18:18:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-06 18:18:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-06 18:18:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:18:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 18:18:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-12-06 18:18:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:18:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 18:18:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-12-06 18:18:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2021-12-06 18:18:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-06 18:18:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-06 18:18:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-12-06 18:18:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-12-06 18:18:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-12-06 18:18:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-12-06 18:18:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2021-12-06 18:18:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2021-12-06 18:18:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-12-06 18:18:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-12-06 18:18:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2021-12-06 18:18:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2021-12-06 18:18:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:18:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 18:18:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 18:18:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2021-12-06 18:18:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-12-06 18:18:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2021-12-06 18:18:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2021-12-06 18:18:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2021-12-06 18:18:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2021-12-06 18:18:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2021-12-06 18:18:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:18:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2021-12-06 18:18:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2021-12-06 18:18:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:18:50,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2536 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 2485 trivial. 0 not checked. [2021-12-06 18:18:50,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:18:50,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955401721] [2021-12-06 18:18:50,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955401721] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:18:50,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:18:50,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:18:50,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65379525] [2021-12-06 18:18:50,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:18:50,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:18:50,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:18:50,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:18:50,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:18:50,807 INFO L87 Difference]: Start difference. First operand 496667 states and 660773 transitions. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 3 states have internal predecessors, (230), 3 states have call successors, (58), 5 states have call predecessors, (58), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-12-06 18:18:58,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:19:08,243 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:20:01,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:01,189 INFO L93 Difference]: Finished difference Result 1385899 states and 1876393 transitions. [2021-12-06 18:20:01,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 18:20:01,191 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 3 states have internal predecessors, (230), 3 states have call successors, (58), 5 states have call predecessors, (58), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 650 [2021-12-06 18:20:01,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:05,126 INFO L225 Difference]: With dead ends: 1385899 [2021-12-06 18:20:05,126 INFO L226 Difference]: Without dead ends: 881631 [2021-12-06 18:20:06,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:20:06,576 INFO L933 BasicCegarLoop]: 5227 mSDtfsCounter, 5807 mSDsluCounter, 6635 mSDsCounter, 0 mSdLazyCounter, 5498 mSolverCounterSat, 3697 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6570 SdHoareTripleChecker+Valid, 11862 SdHoareTripleChecker+Invalid, 9196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3697 IncrementalHoareTripleChecker+Valid, 5498 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:06,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6570 Valid, 11862 Invalid, 9196 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3697 Valid, 5498 Invalid, 1 Unknown, 0 Unchecked, 14.6s Time] [2021-12-06 18:20:07,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881631 states. [2021-12-06 18:20:55,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881631 to 734833. [2021-12-06 18:20:56,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734833 states, 510969 states have (on average 1.2349222751282367) internal successors, (631007), 516453 states have internal predecessors, (631007), 173421 states have call successors, (173421), 50444 states have call predecessors, (173421), 50442 states have return successors, (173635), 172039 states have call predecessors, (173635), 173421 states have call successors, (173635) [2021-12-06 18:20:59,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734833 states to 734833 states and 978063 transitions. [2021-12-06 18:20:59,829 INFO L78 Accepts]: Start accepts. Automaton has 734833 states and 978063 transitions. Word has length 650 [2021-12-06 18:20:59,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:59,829 INFO L470 AbstractCegarLoop]: Abstraction has 734833 states and 978063 transitions. [2021-12-06 18:20:59,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 3 states have internal predecessors, (230), 3 states have call successors, (58), 5 states have call predecessors, (58), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-12-06 18:20:59,830 INFO L276 IsEmpty]: Start isEmpty. Operand 734833 states and 978063 transitions. [2021-12-06 18:20:59,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2021-12-06 18:20:59,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:59,950 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 16, 16, 16, 16, 16, 16, 13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:59,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-06 18:20:59,951 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:20:59,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:59,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1362707813, now seen corresponding path program 1 times [2021-12-06 18:20:59,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:20:59,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174569722] [2021-12-06 18:20:59,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:59,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:21:00,103 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:21:00,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658045475] [2021-12-06 18:21:00,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:00,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:21:00,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:21:00,104 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:21:00,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e721b1e7-6f90-4ae0-849a-52290a293d7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-12-06 18:21:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:01,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 7841 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 18:21:01,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:21:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1943 backedges. 558 proven. 0 refuted. 0 times theorem prover too weak. 1385 trivial. 0 not checked. [2021-12-06 18:21:01,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:21:01,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:21:01,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174569722] [2021-12-06 18:21:01,673 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:21:01,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658045475] [2021-12-06 18:21:01,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658045475] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:01,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:01,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:21:01,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016722062] [2021-12-06 18:21:01,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:01,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:21:01,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:21:01,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:21:01,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:21:01,674 INFO L87 Difference]: Start difference. First operand 734833 states and 978063 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 2 states have call successors, (74), 2 states have call predecessors, (74), 2 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72)