./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-hp-hp100.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c76818fb304a0b40bd70831524c213fb48469a57ba59c902bf604bd33d1e93eb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:58:12,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:58:12,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:58:12,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:58:12,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:58:12,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:58:12,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:58:12,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:58:12,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:58:12,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:58:12,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:58:12,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:58:12,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:58:12,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:58:12,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:58:12,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:58:12,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:58:12,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:58:12,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:58:12,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:58:12,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:58:12,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:58:12,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:58:12,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:58:12,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:58:12,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:58:12,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:58:12,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:58:12,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:58:12,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:58:12,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:58:12,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:58:12,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:58:12,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:58:12,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:58:12,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:58:12,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:58:12,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:58:12,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:58:12,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:58:12,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:58:12,176 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:58:12,203 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:58:12,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:58:12,208 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:58:12,208 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:58:12,209 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:58:12,210 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:58:12,210 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:58:12,210 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:58:12,210 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:58:12,211 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:58:12,212 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:58:12,212 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:58:12,213 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:58:12,213 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:58:12,213 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:58:12,214 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:58:12,214 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:58:12,214 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:58:12,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:58:12,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:58:12,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:58:12,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:58:12,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:58:12,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:58:12,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:58:12,217 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:58:12,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:58:12,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:58:12,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:58:12,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:58:12,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:58:12,220 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:58:12,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:58:12,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:58:12,220 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:58:12,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:58:12,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:58:12,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:58:12,222 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_1339511c-622c-490c-b4cf-b628b4345dd8/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c76818fb304a0b40bd70831524c213fb48469a57ba59c902bf604bd33d1e93eb [2022-11-23 14:58:12,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:58:12,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:58:12,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:58:12,654 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:58:12,654 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:58:12,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i [2022-11-23 14:58:15,980 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:58:16,670 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:58:16,671 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i [2022-11-23 14:58:16,725 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/bin/utaipan-Q6hlc19bkW/data/415da577d/c65f8f9b30ff45e1aaf2ac0b1e244372/FLAGc4ba1b52f [2022-11-23 14:58:16,741 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/bin/utaipan-Q6hlc19bkW/data/415da577d/c65f8f9b30ff45e1aaf2ac0b1e244372 [2022-11-23 14:58:16,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:58:16,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:58:16,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:58:16,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:58:16,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:58:16,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:58:16" (1/1) ... [2022-11-23 14:58:16,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b00715e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:16, skipping insertion in model container [2022-11-23 14:58:16,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:58:16" (1/1) ... [2022-11-23 14:58:16,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:58:16,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:58:19,947 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i[315653,315666] [2022-11-23 14:58:19,954 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i[315798,315811] [2022-11-23 14:58:19,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:58:20,021 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:58:20,509 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i[315653,315666] [2022-11-23 14:58:20,510 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i[315798,315811] [2022-11-23 14:58:20,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:58:20,755 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:58:20,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:20 WrapperNode [2022-11-23 14:58:20,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:58:20,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:58:20,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:58:20,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:58:20,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:20" (1/1) ... [2022-11-23 14:58:20,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:20" (1/1) ... [2022-11-23 14:58:21,062 INFO L138 Inliner]: procedures = 390, calls = 1871, calls flagged for inlining = 177, calls inlined = 157, statements flattened = 4314 [2022-11-23 14:58:21,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:58:21,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:58:21,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:58:21,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:58:21,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:20" (1/1) ... [2022-11-23 14:58:21,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:20" (1/1) ... [2022-11-23 14:58:21,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:20" (1/1) ... [2022-11-23 14:58:21,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:20" (1/1) ... [2022-11-23 14:58:21,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:20" (1/1) ... [2022-11-23 14:58:21,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:20" (1/1) ... [2022-11-23 14:58:21,316 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:20" (1/1) ... [2022-11-23 14:58:21,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:20" (1/1) ... [2022-11-23 14:58:21,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:58:21,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:58:21,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:58:21,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:58:21,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:20" (1/1) ... [2022-11-23 14:58:21,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:58:21,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:58:21,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:58:21,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:58:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 14:58:21,483 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 14:58:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-23 14:58:21,484 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-23 14:58:21,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_89 [2022-11-23 14:58:21,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_89 [2022-11-23 14:58:21,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:58:21,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:58:21,484 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 14:58:21,484 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 14:58:21,485 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2022-11-23 14:58:21,485 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2022-11-23 14:58:21,485 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_open [2022-11-23 14:58:21,485 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_open [2022-11-23 14:58:21,485 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_load_eeprom [2022-11-23 14:58:21,485 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_load_eeprom [2022-11-23 14:58:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 14:58:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_sense_lan [2022-11-23 14:58:21,486 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_sense_lan [2022-11-23 14:58:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 14:58:21,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 14:58:21,487 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-11-23 14:58:21,487 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-11-23 14:58:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 14:58:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 14:58:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 14:58:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 14:58:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-23 14:58:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-23 14:58:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:58:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-23 14:58:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-23 14:58:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2022-11-23 14:58:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2022-11-23 14:58:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_103 [2022-11-23 14:58:21,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_103 [2022-11-23 14:58:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 14:58:21,491 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 14:58:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_cascade_reset [2022-11-23 14:58:21,491 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_cascade_reset [2022-11-23 14:58:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:58:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 14:58:21,492 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 14:58:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:58:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 14:58:21,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 14:58:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:58:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 14:58:21,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 14:58:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 14:58:21,494 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 14:58:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rx_bm [2022-11-23 14:58:21,494 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rx_bm [2022-11-23 14:58:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_BM_shutdown [2022-11-23 14:58:21,494 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_BM_shutdown [2022-11-23 14:58:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 14:58:21,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 14:58:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-23 14:58:21,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-23 14:58:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-23 14:58:21,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-23 14:58:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure wait [2022-11-23 14:58:21,495 INFO L138 BoogieDeclarations]: Found implementation of procedure wait [2022-11-23 14:58:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-23 14:58:21,496 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-23 14:58:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_hwinit [2022-11-23 14:58:21,496 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_hwinit [2022-11-23 14:58:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 14:58:21,496 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 14:58:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_whatever [2022-11-23 14:58:21,497 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_whatever [2022-11-23 14:58:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_close [2022-11-23 14:58:21,497 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_close [2022-11-23 14:58:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:58:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_stop_interface [2022-11-23 14:58:21,499 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_stop_interface [2022-11-23 14:58:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_check_lan [2022-11-23 14:58:21,499 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_check_lan [2022-11-23 14:58:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 14:58:21,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 14:58:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:58:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 14:58:21,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 14:58:21,501 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 14:58:21,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 14:58:21,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:58:21,501 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 14:58:21,501 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:58:21,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:58:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 14:58:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 14:58:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-23 14:58:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-23 14:58:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-23 14:58:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-23 14:58:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-23 14:58:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-23 14:58:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rxfill [2022-11-23 14:58:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rxfill [2022-11-23 14:58:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 14:58:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 14:58:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-23 14:58:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-23 14:58:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-23 14:58:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-23 14:58:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:58:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:58:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_update_stats [2022-11-23 14:58:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_update_stats [2022-11-23 14:58:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:58:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:58:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:58:21,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:58:21,512 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-23 14:58:21,512 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-23 14:58:21,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:58:21,514 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:58:21,514 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 14:58:21,519 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 14:58:21,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:58:21,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:58:21,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:58:21,520 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-23 14:58:21,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-23 14:58:21,520 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-23 14:58:21,520 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-23 14:58:21,520 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 14:58:21,520 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 14:58:21,520 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-23 14:58:21,521 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-23 14:58:21,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 14:58:21,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 14:58:21,521 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-23 14:58:21,521 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-23 14:58:21,521 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_pci_remove [2022-11-23 14:58:21,521 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_pci_remove [2022-11-23 14:58:21,522 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_build_rx_pdl [2022-11-23 14:58:21,522 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_build_rx_pdl [2022-11-23 14:58:21,522 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-23 14:58:21,522 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-23 14:58:21,522 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 14:58:21,522 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 14:58:21,522 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-23 14:58:21,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-23 14:58:21,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_hp100_private [2022-11-23 14:58:21,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_hp100_private [2022-11-23 14:58:21,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:58:21,523 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2022-11-23 14:58:21,523 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2022-11-23 14:58:21,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:58:21,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:58:21,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_hp100_private [2022-11-23 14:58:21,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_hp100_private [2022-11-23 14:58:21,524 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2022-11-23 14:58:21,524 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2022-11-23 14:58:21,524 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-23 14:58:21,524 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-23 14:58:21,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 14:58:21,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 14:58:21,525 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_set_multicast_list [2022-11-23 14:58:21,525 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_set_multicast_list [2022-11-23 14:58:21,525 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_start_interface [2022-11-23 14:58:21,525 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_start_interface [2022-11-23 14:58:21,525 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-23 14:58:21,525 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-23 14:58:21,525 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_clean_txring [2022-11-23 14:58:21,526 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_clean_txring [2022-11-23 14:58:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-23 14:58:21,526 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-23 14:58:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:58:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-23 14:58:21,526 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-23 14:58:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 14:58:21,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 14:58:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_login_to_vg_hub [2022-11-23 14:58:21,527 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_login_to_vg_hub [2022-11-23 14:58:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-11-23 14:58:21,527 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-11-23 14:58:22,388 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:58:22,392 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:58:22,777 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:58:26,604 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 14:58:26,605 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-23 14:58:26,897 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8566-1: assume -9223372036854775808 <= #t~ret684#1 && #t~ret684#1 <= 9223372036854775807;havoc #t~ret684#1; [2022-11-23 14:58:26,897 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8566: SUMMARY for call #t~ret684#1 := schedule_timeout_interruptible(1); srcloc: null [2022-11-23 14:58:26,897 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume 0 == (if 0 == ~tmp___4~7#1 then 0 else (if 2096896 == ~tmp___4~7#1 then ~tmp___4~7#1 else ~bitwiseAnd(~tmp___4~7#1, 2096896))) % 18446744073709551616; [2022-11-23 14:58:26,898 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !(0 == (if 0 == ~tmp___4~7#1 then 0 else (if 2096896 == ~tmp___4~7#1 then ~tmp___4~7#1 else ~bitwiseAnd(~tmp___4~7#1, 2096896))) % 18446744073709551616); [2022-11-23 14:58:26,898 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8570: assume (if (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 else (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 - 18446744073709551616) < 0; [2022-11-23 14:58:26,898 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8570: assume !((if (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 else (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 - 18446744073709551616) < 0); [2022-11-23 14:58:27,067 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:58:28,416 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:58:28,417 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-23 14:58:28,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:58:28 BoogieIcfgContainer [2022-11-23 14:58:28,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:58:28,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:58:28,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:58:28,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:58:28,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:58:16" (1/3) ... [2022-11-23 14:58:28,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4ba6aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:58:28, skipping insertion in model container [2022-11-23 14:58:28,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:20" (2/3) ... [2022-11-23 14:58:28,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4ba6aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:58:28, skipping insertion in model container [2022-11-23 14:58:28,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:58:28" (3/3) ... [2022-11-23 14:58:28,438 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i [2022-11-23 14:58:28,463 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:58:28,464 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:58:28,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:58:28,580 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@49700237, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:58:28,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:58:28,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 1399 states, 751 states have (on average 1.315579227696405) internal successors, (988), 799 states have internal predecessors, (988), 569 states have call successors, (569), 80 states have call predecessors, (569), 79 states have return successors, (564), 548 states have call predecessors, (564), 564 states have call successors, (564) [2022-11-23 14:58:28,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-23 14:58:28,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:58:28,624 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:58:28,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:58:28,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:58:28,630 INFO L85 PathProgramCache]: Analyzing trace with hash -451570498, now seen corresponding path program 1 times [2022-11-23 14:58:28,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:58:28,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386692295] [2022-11-23 14:58:28,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:58:28,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:58:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:58:29,628 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-23 14:58:29,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:58:29,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386692295] [2022-11-23 14:58:29,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386692295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:58:29,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:58:29,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:58:29,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694577028] [2022-11-23 14:58:29,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:58:29,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:58:29,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:58:29,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:58:29,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:58:29,700 INFO L87 Difference]: Start difference. First operand has 1399 states, 751 states have (on average 1.315579227696405) internal successors, (988), 799 states have internal predecessors, (988), 569 states have call successors, (569), 80 states have call predecessors, (569), 79 states have return successors, (564), 548 states have call predecessors, (564), 564 states have call successors, (564) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-23 14:58:31,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:58:31,938 INFO L93 Difference]: Finished difference Result 3996 states and 6127 transitions. [2022-11-23 14:58:31,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:58:31,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 102 [2022-11-23 14:58:31,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:58:31,997 INFO L225 Difference]: With dead ends: 3996 [2022-11-23 14:58:31,997 INFO L226 Difference]: Without dead ends: 2552 [2022-11-23 14:58:32,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:58:32,028 INFO L413 NwaCegarLoop]: 2633 mSDtfsCounter, 1881 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 4519 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:58:32,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 4519 Invalid, 407 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-23 14:58:32,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2022-11-23 14:58:32,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2548. [2022-11-23 14:58:32,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 1371 states have (on average 1.3078045222465353) internal successors, (1793), 1460 states have internal predecessors, (1793), 1030 states have call successors, (1030), 148 states have call predecessors, (1030), 146 states have return successors, (1037), 993 states have call predecessors, (1037), 1030 states have call successors, (1037) [2022-11-23 14:58:32,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 3860 transitions. [2022-11-23 14:58:32,649 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 3860 transitions. Word has length 102 [2022-11-23 14:58:32,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:58:32,652 INFO L495 AbstractCegarLoop]: Abstraction has 2548 states and 3860 transitions. [2022-11-23 14:58:32,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-23 14:58:32,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 3860 transitions. [2022-11-23 14:58:32,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-23 14:58:32,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:58:32,687 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-11-23 14:58:32,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:58:32,688 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:58:32,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:58:32,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1451141585, now seen corresponding path program 1 times [2022-11-23 14:58:32,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:58:32,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713139031] [2022-11-23 14:58:32,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:58:32,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:58:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:58:33,175 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-23 14:58:33,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:58:33,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713139031] [2022-11-23 14:58:33,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713139031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:58:33,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:58:33,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:58:33,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752862286] [2022-11-23 14:58:33,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:58:33,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:58:33,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:58:33,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:58:33,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:58:33,182 INFO L87 Difference]: Start difference. First operand 2548 states and 3860 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 14:58:35,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:58:35,595 INFO L93 Difference]: Finished difference Result 6602 states and 9979 transitions. [2022-11-23 14:58:35,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:58:35,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (24), 2 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 152 [2022-11-23 14:58:35,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:58:35,633 INFO L225 Difference]: With dead ends: 6602 [2022-11-23 14:58:35,633 INFO L226 Difference]: Without dead ends: 4063 [2022-11-23 14:58:35,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:58:35,654 INFO L413 NwaCegarLoop]: 2249 mSDtfsCounter, 1217 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 4086 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:58:35,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 4086 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-23 14:58:35,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2022-11-23 14:58:35,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 4059. [2022-11-23 14:58:35,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4059 states, 2214 states have (on average 1.3062330623306233) internal successors, (2892), 2355 states have internal predecessors, (2892), 1600 states have call successors, (1600), 246 states have call predecessors, (1600), 244 states have return successors, (1607), 1545 states have call predecessors, (1607), 1600 states have call successors, (1607) [2022-11-23 14:58:36,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4059 states to 4059 states and 6099 transitions. [2022-11-23 14:58:36,043 INFO L78 Accepts]: Start accepts. Automaton has 4059 states and 6099 transitions. Word has length 152 [2022-11-23 14:58:36,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:58:36,045 INFO L495 AbstractCegarLoop]: Abstraction has 4059 states and 6099 transitions. [2022-11-23 14:58:36,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 14:58:36,046 INFO L276 IsEmpty]: Start isEmpty. Operand 4059 states and 6099 transitions. [2022-11-23 14:58:36,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-23 14:58:36,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:58:36,064 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 5, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:58:36,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:58:36,065 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:58:36,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:58:36,076 INFO L85 PathProgramCache]: Analyzing trace with hash 405139471, now seen corresponding path program 1 times [2022-11-23 14:58:36,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:58:36,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147016352] [2022-11-23 14:58:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:58:36,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:58:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:58:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-23 14:58:36,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:58:36,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147016352] [2022-11-23 14:58:36,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147016352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:58:36,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:58:36,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:58:36,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328498464] [2022-11-23 14:58:36,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:58:36,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:58:36,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:58:36,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:58:36,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:58:36,440 INFO L87 Difference]: Start difference. First operand 4059 states and 6099 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-23 14:58:38,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:58:38,586 INFO L93 Difference]: Finished difference Result 10783 states and 16146 transitions. [2022-11-23 14:58:38,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:58:38,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 201 [2022-11-23 14:58:38,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:58:38,649 INFO L225 Difference]: With dead ends: 10783 [2022-11-23 14:58:38,649 INFO L226 Difference]: Without dead ends: 6733 [2022-11-23 14:58:38,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:58:38,686 INFO L413 NwaCegarLoop]: 2369 mSDtfsCounter, 1859 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 4194 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:58:38,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1859 Valid, 4194 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-23 14:58:38,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6733 states. [2022-11-23 14:58:39,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6733 to 6728. [2022-11-23 14:58:39,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6728 states, 3681 states have (on average 1.2961151860907363) internal successors, (4771), 3913 states have internal predecessors, (4771), 2625 states have call successors, (2625), 426 states have call predecessors, (2625), 421 states have return successors, (2640), 2531 states have call predecessors, (2640), 2625 states have call successors, (2640) [2022-11-23 14:58:39,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6728 states to 6728 states and 10036 transitions. [2022-11-23 14:58:39,363 INFO L78 Accepts]: Start accepts. Automaton has 6728 states and 10036 transitions. Word has length 201 [2022-11-23 14:58:39,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:58:39,364 INFO L495 AbstractCegarLoop]: Abstraction has 6728 states and 10036 transitions. [2022-11-23 14:58:39,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-23 14:58:39,365 INFO L276 IsEmpty]: Start isEmpty. Operand 6728 states and 10036 transitions. [2022-11-23 14:58:39,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-23 14:58:39,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:58:39,375 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-11-23 14:58:39,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:58:39,375 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:58:39,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:58:39,379 INFO L85 PathProgramCache]: Analyzing trace with hash 432299321, now seen corresponding path program 1 times [2022-11-23 14:58:39,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:58:39,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603903108] [2022-11-23 14:58:39,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:58:39,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:58:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:58:39,956 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-23 14:58:39,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:58:39,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603903108] [2022-11-23 14:58:39,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603903108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:58:39,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:58:39,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:58:39,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698746136] [2022-11-23 14:58:39,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:58:39,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:58:39,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:58:39,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:58:39,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:58:39,961 INFO L87 Difference]: Start difference. First operand 6728 states and 10036 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-23 14:58:43,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:58:44,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:58:44,454 INFO L93 Difference]: Finished difference Result 15371 states and 22887 transitions. [2022-11-23 14:58:44,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:58:44,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 196 [2022-11-23 14:58:44,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:58:44,529 INFO L225 Difference]: With dead ends: 15371 [2022-11-23 14:58:44,530 INFO L226 Difference]: Without dead ends: 8652 [2022-11-23 14:58:44,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:58:44,578 INFO L413 NwaCegarLoop]: 2984 mSDtfsCounter, 1227 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 4813 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:58:44,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 4813 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 522 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-11-23 14:58:44,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8652 states. [2022-11-23 14:58:45,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8652 to 8646. [2022-11-23 14:58:45,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8646 states, 4778 states have (on average 1.2925910422771034) internal successors, (6176), 5071 states have internal predecessors, (6176), 3304 states have call successors, (3304), 568 states have call predecessors, (3304), 563 states have return successors, (3319), 3190 states have call predecessors, (3319), 3304 states have call successors, (3319) [2022-11-23 14:58:45,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8646 states to 8646 states and 12799 transitions. [2022-11-23 14:58:45,362 INFO L78 Accepts]: Start accepts. Automaton has 8646 states and 12799 transitions. Word has length 196 [2022-11-23 14:58:45,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:58:45,363 INFO L495 AbstractCegarLoop]: Abstraction has 8646 states and 12799 transitions. [2022-11-23 14:58:45,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-23 14:58:45,363 INFO L276 IsEmpty]: Start isEmpty. Operand 8646 states and 12799 transitions. [2022-11-23 14:58:45,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-11-23 14:58:45,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:58:45,376 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-23 14:58:45,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:58:45,377 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:58:45,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:58:45,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1078987231, now seen corresponding path program 1 times [2022-11-23 14:58:45,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:58:45,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727603051] [2022-11-23 14:58:45,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:58:45,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:58:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:58:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-11-23 14:58:45,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:58:45,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727603051] [2022-11-23 14:58:45,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727603051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:58:45,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:58:45,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:58:45,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677876130] [2022-11-23 14:58:45,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:58:45,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:58:45,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:58:45,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:58:45,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:58:45,875 INFO L87 Difference]: Start difference. First operand 8646 states and 12799 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 14:58:47,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:58:47,607 INFO L93 Difference]: Finished difference Result 17337 states and 25669 transitions. [2022-11-23 14:58:47,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:58:47,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 258 [2022-11-23 14:58:47,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:58:47,693 INFO L225 Difference]: With dead ends: 17337 [2022-11-23 14:58:47,693 INFO L226 Difference]: Without dead ends: 8700 [2022-11-23 14:58:47,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:58:47,750 INFO L413 NwaCegarLoop]: 1871 mSDtfsCounter, 7 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3734 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:58:47,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 3734 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:58:47,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8700 states. [2022-11-23 14:58:48,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8700 to 8652. [2022-11-23 14:58:48,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8652 states, 4784 states have (on average 1.2922240802675586) internal successors, (6182), 5077 states have internal predecessors, (6182), 3304 states have call successors, (3304), 568 states have call predecessors, (3304), 563 states have return successors, (3319), 3190 states have call predecessors, (3319), 3304 states have call successors, (3319) [2022-11-23 14:58:48,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8652 states to 8652 states and 12805 transitions. [2022-11-23 14:58:48,642 INFO L78 Accepts]: Start accepts. Automaton has 8652 states and 12805 transitions. Word has length 258 [2022-11-23 14:58:48,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:58:48,647 INFO L495 AbstractCegarLoop]: Abstraction has 8652 states and 12805 transitions. [2022-11-23 14:58:48,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 14:58:48,647 INFO L276 IsEmpty]: Start isEmpty. Operand 8652 states and 12805 transitions. [2022-11-23 14:58:48,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-11-23 14:58:48,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:58:48,660 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-11-23 14:58:48,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:58:48,660 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:58:48,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:58:48,661 INFO L85 PathProgramCache]: Analyzing trace with hash 901579580, now seen corresponding path program 1 times [2022-11-23 14:58:48,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:58:48,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920037188] [2022-11-23 14:58:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:58:48,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:58:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:58:49,325 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-11-23 14:58:49,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:58:49,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920037188] [2022-11-23 14:58:49,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920037188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:58:49,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:58:49,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:58:49,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617056767] [2022-11-23 14:58:49,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:58:49,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:58:49,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:58:49,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:58:49,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:58:49,329 INFO L87 Difference]: Start difference. First operand 8652 states and 12805 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-23 14:58:52,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:58:53,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:58:53,766 INFO L93 Difference]: Finished difference Result 20858 states and 30981 transitions. [2022-11-23 14:58:53,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:58:53,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 263 [2022-11-23 14:58:53,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:58:53,864 INFO L225 Difference]: With dead ends: 20858 [2022-11-23 14:58:53,864 INFO L226 Difference]: Without dead ends: 12215 [2022-11-23 14:58:53,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:58:53,917 INFO L413 NwaCegarLoop]: 3254 mSDtfsCounter, 1839 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 4833 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:58:53,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1839 Valid, 4833 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 509 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-11-23 14:58:53,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12215 states. [2022-11-23 14:58:54,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12215 to 12209. [2022-11-23 14:58:55,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12209 states, 6668 states have (on average 1.2907918416316737) internal successors, (8607), 7096 states have internal predecessors, (8607), 4755 states have call successors, (4755), 790 states have call predecessors, (4755), 785 states have return successors, (4770), 4587 states have call predecessors, (4770), 4755 states have call successors, (4770) [2022-11-23 14:58:55,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12209 states to 12209 states and 18132 transitions. [2022-11-23 14:58:55,093 INFO L78 Accepts]: Start accepts. Automaton has 12209 states and 18132 transitions. Word has length 263 [2022-11-23 14:58:55,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:58:55,094 INFO L495 AbstractCegarLoop]: Abstraction has 12209 states and 18132 transitions. [2022-11-23 14:58:55,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-23 14:58:55,095 INFO L276 IsEmpty]: Start isEmpty. Operand 12209 states and 18132 transitions. [2022-11-23 14:58:55,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-23 14:58:55,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:58:55,110 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 5, 5, 5, 4, 4, 4, 4, 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, 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] [2022-11-23 14:58:55,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:58:55,110 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:58:55,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:58:55,111 INFO L85 PathProgramCache]: Analyzing trace with hash 846680629, now seen corresponding path program 1 times [2022-11-23 14:58:55,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:58:55,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791374254] [2022-11-23 14:58:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:58:55,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:58:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:58:55,765 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2022-11-23 14:58:55,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:58:55,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791374254] [2022-11-23 14:58:55,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791374254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:58:55,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:58:55,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:58:55,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783277750] [2022-11-23 14:58:55,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:58:55,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:58:55,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:58:55,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:58:55,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:58:55,770 INFO L87 Difference]: Start difference. First operand 12209 states and 18132 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-23 14:58:58,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:58:58,207 INFO L93 Difference]: Finished difference Result 26341 states and 39088 transitions. [2022-11-23 14:58:58,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:58:58,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 305 [2022-11-23 14:58:58,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:58:58,303 INFO L225 Difference]: With dead ends: 26341 [2022-11-23 14:58:58,304 INFO L226 Difference]: Without dead ends: 14141 [2022-11-23 14:58:58,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:58:58,370 INFO L413 NwaCegarLoop]: 2870 mSDtfsCounter, 1237 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 4699 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:58:58,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 4699 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 14:58:58,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14141 states. [2022-11-23 14:58:59,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14141 to 14135. [2022-11-23 14:58:59,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14135 states, 7782 states have (on average 1.2907992803906452) internal successors, (10045), 8271 states have internal predecessors, (10045), 5426 states have call successors, (5426), 931 states have call predecessors, (5426), 926 states have return successors, (5441), 5238 states have call predecessors, (5441), 5426 states have call successors, (5441) [2022-11-23 14:58:59,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14135 states to 14135 states and 20912 transitions. [2022-11-23 14:58:59,599 INFO L78 Accepts]: Start accepts. Automaton has 14135 states and 20912 transitions. Word has length 305 [2022-11-23 14:58:59,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:58:59,601 INFO L495 AbstractCegarLoop]: Abstraction has 14135 states and 20912 transitions. [2022-11-23 14:58:59,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-23 14:58:59,601 INFO L276 IsEmpty]: Start isEmpty. Operand 14135 states and 20912 transitions. [2022-11-23 14:58:59,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-11-23 14:58:59,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:58:59,618 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 14:58:59,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:58:59,619 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:58:59,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:58:59,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1387090374, now seen corresponding path program 1 times [2022-11-23 14:58:59,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:58:59,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499672323] [2022-11-23 14:58:59,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:58:59,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:58:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2022-11-23 14:59:00,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:00,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499672323] [2022-11-23 14:59:00,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499672323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:00,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:00,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:59:00,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41137419] [2022-11-23 14:59:00,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:00,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:59:00,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:00,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:59:00,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:59:00,135 INFO L87 Difference]: Start difference. First operand 14135 states and 20912 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-23 14:59:04,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:04,261 INFO L93 Difference]: Finished difference Result 31038 states and 45900 transitions. [2022-11-23 14:59:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:59:04,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) Word has length 342 [2022-11-23 14:59:04,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:04,394 INFO L225 Difference]: With dead ends: 31038 [2022-11-23 14:59:04,394 INFO L226 Difference]: Without dead ends: 16912 [2022-11-23 14:59:04,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:59:04,484 INFO L413 NwaCegarLoop]: 2958 mSDtfsCounter, 1324 mSDsluCounter, 7737 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 10695 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:04,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1324 Valid, 10695 Invalid, 1093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-23 14:59:04,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16912 states. [2022-11-23 14:59:05,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16912 to 16898. [2022-11-23 14:59:05,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16898 states, 9311 states have (on average 1.2910535925249704) internal successors, (12021), 9894 states have internal predecessors, (12021), 6466 states have call successors, (6466), 1126 states have call predecessors, (6466), 1120 states have return successors, (6485), 6249 states have call predecessors, (6485), 6466 states have call successors, (6485) [2022-11-23 14:59:05,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16898 states to 16898 states and 24972 transitions. [2022-11-23 14:59:05,815 INFO L78 Accepts]: Start accepts. Automaton has 16898 states and 24972 transitions. Word has length 342 [2022-11-23 14:59:05,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:05,816 INFO L495 AbstractCegarLoop]: Abstraction has 16898 states and 24972 transitions. [2022-11-23 14:59:05,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-23 14:59:05,817 INFO L276 IsEmpty]: Start isEmpty. Operand 16898 states and 24972 transitions. [2022-11-23 14:59:05,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-11-23 14:59:05,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:05,833 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 14:59:05,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:59:05,834 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:59:05,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:05,835 INFO L85 PathProgramCache]: Analyzing trace with hash 2062208243, now seen corresponding path program 1 times [2022-11-23 14:59:05,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:05,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480553363] [2022-11-23 14:59:05,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:05,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:06,406 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2022-11-23 14:59:06,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:06,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480553363] [2022-11-23 14:59:06,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480553363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:06,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:06,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:59:06,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651143444] [2022-11-23 14:59:06,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:06,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:59:06,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:06,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:59:06,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:59:06,410 INFO L87 Difference]: Start difference. First operand 16898 states and 24972 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-23 14:59:09,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:09,864 INFO L93 Difference]: Finished difference Result 35703 states and 52716 transitions. [2022-11-23 14:59:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:59:09,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) Word has length 343 [2022-11-23 14:59:09,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:09,966 INFO L225 Difference]: With dead ends: 35703 [2022-11-23 14:59:09,966 INFO L226 Difference]: Without dead ends: 18814 [2022-11-23 14:59:10,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:59:10,045 INFO L413 NwaCegarLoop]: 2988 mSDtfsCounter, 1221 mSDsluCounter, 7805 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 10793 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:10,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 10793 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-23 14:59:10,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18814 states. [2022-11-23 14:59:11,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18814 to 18800. [2022-11-23 14:59:11,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18800 states, 10393 states have (on average 1.2903877609929761) internal successors, (13411), 11037 states have internal predecessors, (13411), 7137 states have call successors, (7137), 1271 states have call predecessors, (7137), 1269 states have return successors, (7160), 6904 states have call predecessors, (7160), 7137 states have call successors, (7160) [2022-11-23 14:59:11,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18800 states to 18800 states and 27708 transitions. [2022-11-23 14:59:11,570 INFO L78 Accepts]: Start accepts. Automaton has 18800 states and 27708 transitions. Word has length 343 [2022-11-23 14:59:11,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:11,571 INFO L495 AbstractCegarLoop]: Abstraction has 18800 states and 27708 transitions. [2022-11-23 14:59:11,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-23 14:59:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 18800 states and 27708 transitions. [2022-11-23 14:59:11,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-11-23 14:59:11,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:11,593 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:59:11,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:59:11,593 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:59:11,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:11,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1045737649, now seen corresponding path program 1 times [2022-11-23 14:59:11,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:11,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101363689] [2022-11-23 14:59:11,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:11,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:12,172 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2022-11-23 14:59:12,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:12,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101363689] [2022-11-23 14:59:12,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101363689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:12,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:12,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:59:12,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662644816] [2022-11-23 14:59:12,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:12,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:59:12,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:12,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:59:12,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:59:12,175 INFO L87 Difference]: Start difference. First operand 18800 states and 27708 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-23 14:59:15,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:15,683 INFO L93 Difference]: Finished difference Result 39479 states and 58172 transitions. [2022-11-23 14:59:15,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:59:15,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) Word has length 343 [2022-11-23 14:59:15,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:15,805 INFO L225 Difference]: With dead ends: 39479 [2022-11-23 14:59:15,805 INFO L226 Difference]: Without dead ends: 20688 [2022-11-23 14:59:15,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:59:15,917 INFO L413 NwaCegarLoop]: 2987 mSDtfsCounter, 1211 mSDsluCounter, 7809 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 10796 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:15,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 10796 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-23 14:59:15,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20688 states. [2022-11-23 14:59:17,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20688 to 20674. [2022-11-23 14:59:17,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20674 states, 11463 states have (on average 1.2901509203524384) internal successors, (14789), 12168 states have internal predecessors, (14789), 7804 states have call successors, (7804), 1408 states have call predecessors, (7804), 1406 states have return successors, (7827), 7551 states have call predecessors, (7827), 7804 states have call successors, (7827) [2022-11-23 14:59:17,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20674 states to 20674 states and 30420 transitions. [2022-11-23 14:59:17,372 INFO L78 Accepts]: Start accepts. Automaton has 20674 states and 30420 transitions. Word has length 343 [2022-11-23 14:59:17,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:17,373 INFO L495 AbstractCegarLoop]: Abstraction has 20674 states and 30420 transitions. [2022-11-23 14:59:17,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-23 14:59:17,374 INFO L276 IsEmpty]: Start isEmpty. Operand 20674 states and 30420 transitions. [2022-11-23 14:59:17,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-11-23 14:59:17,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:17,390 INFO L195 NwaCegarLoop]: trace histogram [17, 14, 14, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 14:59:17,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:59:17,391 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:59:17,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:17,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1803754193, now seen corresponding path program 1 times [2022-11-23 14:59:17,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:17,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621958364] [2022-11-23 14:59:17,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:17,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked. [2022-11-23 14:59:17,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:17,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621958364] [2022-11-23 14:59:17,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621958364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:17,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:17,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:59:17,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108096392] [2022-11-23 14:59:17,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:17,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:59:17,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:17,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:59:17,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:59:17,669 INFO L87 Difference]: Start difference. First operand 20674 states and 30420 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-23 14:59:20,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:20,133 INFO L93 Difference]: Finished difference Result 43861 states and 64554 transitions. [2022-11-23 14:59:20,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:59:20,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 356 [2022-11-23 14:59:20,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:20,448 INFO L225 Difference]: With dead ends: 43861 [2022-11-23 14:59:20,448 INFO L226 Difference]: Without dead ends: 23196 [2022-11-23 14:59:20,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:59:20,505 INFO L413 NwaCegarLoop]: 3038 mSDtfsCounter, 1316 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 4870 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:20,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 4870 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-23 14:59:20,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23196 states. [2022-11-23 14:59:21,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23196 to 23190. [2022-11-23 14:59:21,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23190 states, 12861 states have (on average 1.2914236840059092) internal successors, (16609), 13659 states have internal predecessors, (16609), 8751 states have call successors, (8751), 1581 states have call predecessors, (8751), 1577 states have return successors, (8774), 8468 states have call predecessors, (8774), 8751 states have call successors, (8774) [2022-11-23 14:59:21,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23190 states to 23190 states and 34134 transitions. [2022-11-23 14:59:21,836 INFO L78 Accepts]: Start accepts. Automaton has 23190 states and 34134 transitions. Word has length 356 [2022-11-23 14:59:21,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:21,837 INFO L495 AbstractCegarLoop]: Abstraction has 23190 states and 34134 transitions. [2022-11-23 14:59:21,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-23 14:59:21,838 INFO L276 IsEmpty]: Start isEmpty. Operand 23190 states and 34134 transitions. [2022-11-23 14:59:21,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2022-11-23 14:59:21,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:21,856 INFO L195 NwaCegarLoop]: trace histogram [17, 14, 14, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:59:21,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 14:59:21,856 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:59:21,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:21,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1045733942, now seen corresponding path program 1 times [2022-11-23 14:59:21,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:21,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562962308] [2022-11-23 14:59:21,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:21,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2022-11-23 14:59:22,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:22,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562962308] [2022-11-23 14:59:22,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562962308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:22,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:22,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:59:22,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166349189] [2022-11-23 14:59:22,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:22,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:59:22,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:22,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:59:22,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:59:22,191 INFO L87 Difference]: Start difference. First operand 23190 states and 34134 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-23 14:59:24,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:24,966 INFO L93 Difference]: Finished difference Result 48279 states and 71044 transitions. [2022-11-23 14:59:24,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:59:24,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 363 [2022-11-23 14:59:24,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:25,051 INFO L225 Difference]: With dead ends: 48279 [2022-11-23 14:59:25,051 INFO L226 Difference]: Without dead ends: 25098 [2022-11-23 14:59:25,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:59:25,115 INFO L413 NwaCegarLoop]: 2806 mSDtfsCounter, 1222 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 4641 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:25,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 4641 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-23 14:59:25,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25098 states. [2022-11-23 14:59:26,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25098 to 25092. [2022-11-23 14:59:26,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25092 states, 13951 states have (on average 1.2913052827754283) internal successors, (18015), 14810 states have internal predecessors, (18015), 9422 states have call successors, (9422), 1722 states have call predecessors, (9422), 1718 states have return successors, (9445), 9119 states have call predecessors, (9445), 9422 states have call successors, (9445) [2022-11-23 14:59:26,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25092 states to 25092 states and 36882 transitions. [2022-11-23 14:59:26,451 INFO L78 Accepts]: Start accepts. Automaton has 25092 states and 36882 transitions. Word has length 363 [2022-11-23 14:59:26,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:26,452 INFO L495 AbstractCegarLoop]: Abstraction has 25092 states and 36882 transitions. [2022-11-23 14:59:26,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-23 14:59:26,452 INFO L276 IsEmpty]: Start isEmpty. Operand 25092 states and 36882 transitions. [2022-11-23 14:59:26,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-11-23 14:59:26,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:26,470 INFO L195 NwaCegarLoop]: trace histogram [17, 15, 15, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 14:59:26,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 14:59:26,470 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:59:26,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:26,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1578979194, now seen corresponding path program 1 times [2022-11-23 14:59:26,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:26,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791815856] [2022-11-23 14:59:26,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:26,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2022-11-23 14:59:26,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:26,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791815856] [2022-11-23 14:59:26,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791815856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:26,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:26,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:59:26,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617386005] [2022-11-23 14:59:26,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:26,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:59:26,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:26,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:59:26,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:59:26,909 INFO L87 Difference]: Start difference. First operand 25092 states and 36882 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-23 14:59:30,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:59:31,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:31,394 INFO L93 Difference]: Finished difference Result 52043 states and 76484 transitions. [2022-11-23 14:59:31,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:59:31,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 373 [2022-11-23 14:59:31,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:31,541 INFO L225 Difference]: With dead ends: 52043 [2022-11-23 14:59:31,541 INFO L226 Difference]: Without dead ends: 26960 [2022-11-23 14:59:31,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:59:31,613 INFO L413 NwaCegarLoop]: 2986 mSDtfsCounter, 1220 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 4817 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:31,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 4817 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 514 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-11-23 14:59:31,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26960 states. [2022-11-23 14:59:33,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26960 to 26954. [2022-11-23 14:59:33,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26954 states, 15009 states have (on average 1.2912918915317477) internal successors, (19381), 15929 states have internal predecessors, (19381), 10089 states have call successors, (10089), 1859 states have call predecessors, (10089), 1855 states have return successors, (10112), 9766 states have call predecessors, (10112), 10089 states have call successors, (10112) [2022-11-23 14:59:33,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26954 states to 26954 states and 39582 transitions. [2022-11-23 14:59:33,345 INFO L78 Accepts]: Start accepts. Automaton has 26954 states and 39582 transitions. Word has length 373 [2022-11-23 14:59:33,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:33,345 INFO L495 AbstractCegarLoop]: Abstraction has 26954 states and 39582 transitions. [2022-11-23 14:59:33,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-23 14:59:33,346 INFO L276 IsEmpty]: Start isEmpty. Operand 26954 states and 39582 transitions. [2022-11-23 14:59:33,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-23 14:59:33,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:33,361 INFO L195 NwaCegarLoop]: trace histogram [19, 14, 14, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:59:33,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 14:59:33,361 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:59:33,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:33,362 INFO L85 PathProgramCache]: Analyzing trace with hash -364717524, now seen corresponding path program 1 times [2022-11-23 14:59:33,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:33,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972118267] [2022-11-23 14:59:33,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:33,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:33,783 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2022-11-23 14:59:33,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:33,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972118267] [2022-11-23 14:59:33,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972118267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:33,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:33,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:59:33,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237696588] [2022-11-23 14:59:33,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:33,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:59:33,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:33,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:59:33,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:59:33,787 INFO L87 Difference]: Start difference. First operand 26954 states and 39582 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-23 14:59:37,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:37,346 INFO L93 Difference]: Finished difference Result 56559 states and 83041 transitions. [2022-11-23 14:59:37,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:59:37,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) Word has length 391 [2022-11-23 14:59:37,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:37,458 INFO L225 Difference]: With dead ends: 56559 [2022-11-23 14:59:37,459 INFO L226 Difference]: Without dead ends: 29614 [2022-11-23 14:59:37,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:59:37,540 INFO L413 NwaCegarLoop]: 2850 mSDtfsCounter, 1323 mSDsluCounter, 7521 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 10371 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:37,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 10371 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-23 14:59:37,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29614 states. [2022-11-23 14:59:38,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29614 to 27754. [2022-11-23 14:59:39,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27754 states, 15434 states have (on average 1.2915640793054295) internal successors, (19934), 16382 states have internal predecessors, (19934), 10401 states have call successors, (10401), 1918 states have call predecessors, (10401), 1918 states have return successors, (10428), 10074 states have call predecessors, (10428), 10401 states have call successors, (10428) [2022-11-23 14:59:39,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27754 states to 27754 states and 40763 transitions. [2022-11-23 14:59:39,137 INFO L78 Accepts]: Start accepts. Automaton has 27754 states and 40763 transitions. Word has length 391 [2022-11-23 14:59:39,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:39,139 INFO L495 AbstractCegarLoop]: Abstraction has 27754 states and 40763 transitions. [2022-11-23 14:59:39,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-23 14:59:39,139 INFO L276 IsEmpty]: Start isEmpty. Operand 27754 states and 40763 transitions. [2022-11-23 14:59:39,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-11-23 14:59:39,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:39,156 INFO L195 NwaCegarLoop]: trace histogram [19, 14, 14, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:59:39,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 14:59:39,156 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:59:39,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:39,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1452861245, now seen corresponding path program 1 times [2022-11-23 14:59:39,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:39,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220435944] [2022-11-23 14:59:39,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:39,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 969 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-23 14:59:39,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:39,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220435944] [2022-11-23 14:59:39,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220435944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:39,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:39,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:59:39,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438668748] [2022-11-23 14:59:39,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:39,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:59:39,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:39,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:59:39,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:59:39,889 INFO L87 Difference]: Start difference. First operand 27754 states and 40763 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-23 14:59:43,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:43,625 INFO L93 Difference]: Finished difference Result 57419 states and 84298 transitions. [2022-11-23 14:59:43,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:59:43,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) Word has length 392 [2022-11-23 14:59:43,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:43,773 INFO L225 Difference]: With dead ends: 57419 [2022-11-23 14:59:43,773 INFO L226 Difference]: Without dead ends: 29674 [2022-11-23 14:59:43,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:59:43,879 INFO L413 NwaCegarLoop]: 2988 mSDtfsCounter, 1220 mSDsluCounter, 7805 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 10793 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:43,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 10793 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-23 14:59:43,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29674 states. [2022-11-23 14:59:45,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29674 to 27794. [2022-11-23 14:59:45,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27794 states, 15458 states have (on average 1.2911113986285419) internal successors, (19958), 16406 states have internal predecessors, (19958), 10405 states have call successors, (10405), 1926 states have call predecessors, (10405), 1930 states have return successors, (10436), 10082 states have call predecessors, (10436), 10405 states have call successors, (10436) [2022-11-23 14:59:45,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27794 states to 27794 states and 40799 transitions. [2022-11-23 14:59:45,463 INFO L78 Accepts]: Start accepts. Automaton has 27794 states and 40799 transitions. Word has length 392 [2022-11-23 14:59:45,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:45,468 INFO L495 AbstractCegarLoop]: Abstraction has 27794 states and 40799 transitions. [2022-11-23 14:59:45,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-23 14:59:45,468 INFO L276 IsEmpty]: Start isEmpty. Operand 27794 states and 40799 transitions. [2022-11-23 14:59:45,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-11-23 14:59:45,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:45,483 INFO L195 NwaCegarLoop]: trace histogram [19, 14, 14, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:59:45,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 14:59:45,484 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:59:45,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:45,485 INFO L85 PathProgramCache]: Analyzing trace with hash -734135643, now seen corresponding path program 1 times [2022-11-23 14:59:45,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:45,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777104084] [2022-11-23 14:59:45,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:45,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:46,182 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 127 proven. 26 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2022-11-23 14:59:46,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:46,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777104084] [2022-11-23 14:59:46,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777104084] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:59:46,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825803595] [2022-11-23 14:59:46,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:46,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:46,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:46,190 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:59:46,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:59:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:47,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 3364 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:59:47,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:59:47,422 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2022-11-23 14:59:47,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:59:47,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825803595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:47,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:59:47,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-23 14:59:47,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469730250] [2022-11-23 14:59:47,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:47,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:59:47,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:47,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:59:47,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:59:47,426 INFO L87 Difference]: Start difference. First operand 27794 states and 40799 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 3 states have call successors, (48), 3 states have call predecessors, (48), 4 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-23 14:59:52,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:52,252 INFO L93 Difference]: Finished difference Result 57487 states and 84390 transitions. [2022-11-23 14:59:52,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:59:52,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 3 states have call successors, (48), 3 states have call predecessors, (48), 4 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) Word has length 393 [2022-11-23 14:59:52,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:52,404 INFO L225 Difference]: With dead ends: 57487 [2022-11-23 14:59:52,404 INFO L226 Difference]: Without dead ends: 29702 [2022-11-23 14:59:52,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:59:52,527 INFO L413 NwaCegarLoop]: 3094 mSDtfsCounter, 1866 mSDsluCounter, 7740 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1866 SdHoareTripleChecker+Valid, 10834 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:52,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1866 Valid, 10834 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-23 14:59:52,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29702 states. [2022-11-23 14:59:53,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29702 to 29688. [2022-11-23 14:59:53,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29688 states, 16548 states have (on average 1.2919990331157845) internal successors, (21380), 17557 states have internal predecessors, (21380), 11072 states have call successors, (11072), 2063 states have call predecessors, (11072), 2067 states have return successors, (11103), 10729 states have call predecessors, (11103), 11072 states have call successors, (11103) [2022-11-23 14:59:54,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29688 states to 29688 states and 43555 transitions. [2022-11-23 14:59:54,119 INFO L78 Accepts]: Start accepts. Automaton has 29688 states and 43555 transitions. Word has length 393 [2022-11-23 14:59:54,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:54,120 INFO L495 AbstractCegarLoop]: Abstraction has 29688 states and 43555 transitions. [2022-11-23 14:59:54,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 3 states have call successors, (48), 3 states have call predecessors, (48), 4 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-23 14:59:54,121 INFO L276 IsEmpty]: Start isEmpty. Operand 29688 states and 43555 transitions. [2022-11-23 14:59:54,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-11-23 14:59:54,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:54,133 INFO L195 NwaCegarLoop]: trace histogram [18, 16, 16, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 14:59:54,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:59:54,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1339511c-622c-490c-b4cf-b628b4345dd8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 14:59:54,334 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:59:54,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:54,334 INFO L85 PathProgramCache]: Analyzing trace with hash 285491370, now seen corresponding path program 1 times [2022-11-23 14:59:54,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:54,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155868188] [2022-11-23 14:59:54,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:54,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:54,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-11-23 14:59:54,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:54,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155868188] [2022-11-23 14:59:54,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155868188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:54,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:54,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:59:54,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443337467] [2022-11-23 14:59:54,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:54,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:59:54,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:54,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:59:54,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:59:54,662 INFO L87 Difference]: Start difference. First operand 29688 states and 43555 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, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-23 14:59:57,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:57,362 INFO L93 Difference]: Finished difference Result 62998 states and 92575 transitions. [2022-11-23 14:59:57,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:59:57,363 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, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 403 [2022-11-23 14:59:57,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:57,509 INFO L225 Difference]: With dead ends: 62998 [2022-11-23 14:59:57,509 INFO L226 Difference]: Without dead ends: 33319 [2022-11-23 14:59:57,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:59:57,628 INFO L413 NwaCegarLoop]: 2943 mSDtfsCounter, 1558 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 4776 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:57,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 4776 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-23 14:59:57,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33319 states. [2022-11-23 14:59:59,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33319 to 33313. [2022-11-23 14:59:59,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33313 states, 18453 states have (on average 1.29155150923969) internal successors, (23833), 19602 states have internal predecessors, (23833), 12569 states have call successors, (12569), 2288 states have call predecessors, (12569), 2290 states have return successors, (12602), 12168 states have call predecessors, (12602), 12569 states have call successors, (12602) [2022-11-23 14:59:59,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33313 states to 33313 states and 49004 transitions. [2022-11-23 14:59:59,869 INFO L78 Accepts]: Start accepts. Automaton has 33313 states and 49004 transitions. Word has length 403 [2022-11-23 14:59:59,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:59,870 INFO L495 AbstractCegarLoop]: Abstraction has 33313 states and 49004 transitions. [2022-11-23 14:59:59,870 INFO L496 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, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-23 14:59:59,870 INFO L276 IsEmpty]: Start isEmpty. Operand 33313 states and 49004 transitions. [2022-11-23 14:59:59,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-23 14:59:59,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:59,881 INFO L195 NwaCegarLoop]: trace histogram [18, 16, 16, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 14:59:59,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 14:59:59,881 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:59:59,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:59,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1432055748, now seen corresponding path program 1 times [2022-11-23 14:59:59,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:59,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884102845] [2022-11-23 14:59:59,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:59,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:00:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2022-11-23 15:00:01,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:00:01,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884102845] [2022-11-23 15:00:01,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884102845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:00:01,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:00:01,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:00:01,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284470902] [2022-11-23 15:00:01,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:00:01,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:00:01,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:00:01,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:00:01,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:00:01,129 INFO L87 Difference]: Start difference. First operand 33313 states and 49004 transitions. Second operand has 5 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44)