./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_29c7c9b9-b520-46fa-8c64-737375a06100/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c7c9b9-b520-46fa-8c64-737375a06100/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c7c9b9-b520-46fa-8c64-737375a06100/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c7c9b9-b520-46fa-8c64-737375a06100/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c7c9b9-b520-46fa-8c64-737375a06100/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c7c9b9-b520-46fa-8c64-737375a06100/bin/utaipan-7li7fVZpFI --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 4b829e0b1083ca135908ac8582697cf0831b43587b46e1b9cc42429c7a2c7866 --- 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-5e519f3 [2022-11-03 04:03:55,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:03:55,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:03:55,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:03:55,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:03:55,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:03:55,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:03:55,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:03:55,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:03:55,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:03:55,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:03:55,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:03:55,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:03:55,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:03:55,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:03:55,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:03:55,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:03:55,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:03:55,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:03:55,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:03:55,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:03:55,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:03:55,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:03:55,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:03:55,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:03:55,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:03:55,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:03:55,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:03:55,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:03:55,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:03:55,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:03:55,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:03:55,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:03:55,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:03:55,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:03:55,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:03:55,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:03:55,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:03:55,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:03:55,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:03:55,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:03:55,161 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c7c9b9-b520-46fa-8c64-737375a06100/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 04:03:55,209 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:03:55,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:03:55,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:03:55,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:03:55,212 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:03:55,212 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:03:55,212 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:03:55,213 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:03:55,213 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:03:55,213 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:03:55,214 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:03:55,215 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:03:55,215 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:03:55,215 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:03:55,216 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:03:55,216 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:03:55,216 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:03:55,216 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:03:55,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:03:55,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:03:55,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:03:55,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:03:55,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:03:55,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:03:55,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:03:55,219 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:03:55,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:03:55,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:03:55,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:03:55,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:03:55,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:03:55,222 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:03:55,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:03:55,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:03:55,223 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:03:55,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:03:55,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:03:55,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:03:55,224 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_29c7c9b9-b520-46fa-8c64-737375a06100/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c7c9b9-b520-46fa-8c64-737375a06100/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b829e0b1083ca135908ac8582697cf0831b43587b46e1b9cc42429c7a2c7866 [2022-11-03 04:03:55,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:03:55,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:03:55,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:03:55,608 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:03:55,609 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:03:55,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c7c9b9-b520-46fa-8c64-737375a06100/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2022-11-03 04:03:55,694 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c7c9b9-b520-46fa-8c64-737375a06100/bin/utaipan-7li7fVZpFI/data/f1ef6c2fc/573cf68da236486e9473868b7639d46c/FLAGe1500d4d8 [2022-11-03 04:03:56,846 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:03:56,846 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c7c9b9-b520-46fa-8c64-737375a06100/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2022-11-03 04:03:56,938 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c7c9b9-b520-46fa-8c64-737375a06100/bin/utaipan-7li7fVZpFI/data/f1ef6c2fc/573cf68da236486e9473868b7639d46c/FLAGe1500d4d8 [2022-11-03 04:03:57,107 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c7c9b9-b520-46fa-8c64-737375a06100/bin/utaipan-7li7fVZpFI/data/f1ef6c2fc/573cf68da236486e9473868b7639d46c [2022-11-03 04:03:57,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:03:57,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:03:57,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:03:57,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:03:57,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:03:57,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:03:57" (1/1) ... [2022-11-03 04:03:57,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fc2773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:57, skipping insertion in model container [2022-11-03 04:03:57,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:03:57" (1/1) ... [2022-11-03 04:03:57,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:03:57,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:04:00,832 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c7c9b9-b520-46fa-8c64-737375a06100/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[378939,378952] [2022-11-03 04:04:00,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:04:01,070 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:04:01,749 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c7c9b9-b520-46fa-8c64-737375a06100/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[378939,378952] [2022-11-03 04:04:01,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:04:01,965 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:04:01,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:01 WrapperNode [2022-11-03 04:04:01,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:04:01,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:04:01,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:04:01,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:04:01,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:01" (1/1) ... [2022-11-03 04:04:02,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:01" (1/1) ... [2022-11-03 04:04:02,362 INFO L138 Inliner]: procedures = 341, calls = 3940, calls flagged for inlining = 136, calls inlined = 92, statements flattened = 5421 [2022-11-03 04:04:02,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:04:02,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:04:02,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:04:02,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:04:02,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:01" (1/1) ... [2022-11-03 04:04:02,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:01" (1/1) ... [2022-11-03 04:04:02,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:01" (1/1) ... [2022-11-03 04:04:02,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:01" (1/1) ... [2022-11-03 04:04:02,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:01" (1/1) ... [2022-11-03 04:04:02,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:01" (1/1) ... [2022-11-03 04:04:02,722 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:01" (1/1) ... [2022-11-03 04:04:02,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:01" (1/1) ... [2022-11-03 04:04:02,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:04:02,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:04:02,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:04:02,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:04:02,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:01" (1/1) ... [2022-11-03 04:04:02,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:04:02,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c7c9b9-b520-46fa-8c64-737375a06100/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:04:02,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c7c9b9-b520-46fa-8c64-737375a06100/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:04:02,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c7c9b9-b520-46fa-8c64-737375a06100/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:04:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_schedule_event [2022-11-03 04:04:02,877 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_schedule_event [2022-11-03 04:04:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freebcshw [2022-11-03 04:04:02,878 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freebcshw [2022-11-03 04:04:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 04:04:02,878 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 04:04:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_set_modem_ctrl [2022-11-03 04:04:02,878 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_set_modem_ctrl [2022-11-03 04:04:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-03 04:04:02,879 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-03 04:04:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_reinitbcshw [2022-11-03 04:04:02,879 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_reinitbcshw [2022-11-03 04:04:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 04:04:02,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 04:04:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 04:04:02,880 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 04:04:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2022-11-03 04:04:02,880 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2022-11-03 04:04:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_brkchars [2022-11-03 04:04:02,880 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_brkchars [2022-11-03 04:04:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_add_event [2022-11-03 04:04:02,881 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_add_event [2022-11-03 04:04:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_control_urb [2022-11-03 04:04:02,881 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_control_urb [2022-11-03 04:04:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 04:04:02,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 04:04:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 04:04:02,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 04:04:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_close_bchannel [2022-11-03 04:04:02,882 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_close_bchannel [2022-11-03 04:04:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_resume [2022-11-03 04:04:02,883 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_resume [2022-11-03 04:04:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_baud_rate [2022-11-03 04:04:02,883 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_baud_rate [2022-11-03 04:04:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure freeurbs [2022-11-03 04:04:02,883 INFO L138 BoogieDeclarations]: Found implementation of procedure freeurbs [2022-11-03 04:04:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_bchannel_down [2022-11-03 04:04:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_bchannel_down [2022-11-03 04:04:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-03 04:04:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-03 04:04:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 04:04:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 04:04:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure start_cbsend [2022-11-03 04:04:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure start_cbsend [2022-11-03 04:04:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 04:04:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 04:04:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_dbg_buffer [2022-11-03 04:04:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_dbg_buffer [2022-11-03 04:04:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 04:04:02,888 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 04:04:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-03 04:04:02,888 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-03 04:04:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_set_line_ctrl [2022-11-03 04:04:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_set_line_ctrl [2022-11-03 04:04:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2022-11-03 04:04:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2022-11-03 04:04:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure usb_queue_reset_device [2022-11-03 04:04:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_queue_reset_device [2022-11-03 04:04:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 04:04:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 04:04:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2022-11-03 04:04:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2022-11-03 04:04:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_write_room [2022-11-03 04:04:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_write_room [2022-11-03 04:04:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_4 [2022-11-03 04:04:02,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_4 [2022-11-03 04:04:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_3 [2022-11-03 04:04:02,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_3 [2022-11-03 04:04:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 04:04:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_5 [2022-11-03 04:04:02,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_5 [2022-11-03 04:04:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 04:04:02,894 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 04:04:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-11-03 04:04:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-11-03 04:04:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure check_pending [2022-11-03 04:04:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure check_pending [2022-11-03 04:04:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 04:04:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 04:04:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure error_hangup [2022-11-03 04:04:02,896 INFO L138 BoogieDeclarations]: Found implementation of procedure error_hangup [2022-11-03 04:04:02,896 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freedriver [2022-11-03 04:04:02,897 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freedriver [2022-11-03 04:04:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_isoc_send_skb [2022-11-03 04:04:02,897 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_isoc_send_skb [2022-11-03 04:04:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_chars_in_buffer [2022-11-03 04:04:02,897 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_chars_in_buffer [2022-11-03 04:04:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 04:04:02,899 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 04:04:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure req_submit [2022-11-03 04:04:02,899 INFO L138 BoogieDeclarations]: Found implementation of procedure req_submit [2022-11-03 04:04:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:04:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_1 [2022-11-03 04:04:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_1 [2022-11-03 04:04:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 04:04:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2022-11-03 04:04:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2022-11-03 04:04:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-03 04:04:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-03 04:04:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 04:04:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 04:04:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure complete_cb [2022-11-03 04:04:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_cb [2022-11-03 04:04:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-03 04:04:02,903 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-03 04:04:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure stopurbs [2022-11-03 04:04:02,903 INFO L138 BoogieDeclarations]: Found implementation of procedure stopurbs [2022-11-03 04:04:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freecshw [2022-11-03 04:04:02,903 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freecshw [2022-11-03 04:04:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 04:04:02,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 04:04:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_3 [2022-11-03 04:04:02,908 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_3 [2022-11-03 04:04:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure int_in_work [2022-11-03 04:04:02,909 INFO L138 BoogieDeclarations]: Found implementation of procedure int_in_work [2022-11-03 04:04:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 04:04:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure dump_urb [2022-11-03 04:04:02,912 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_urb [2022-11-03 04:04:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-03 04:04:02,912 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-03 04:04:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 04:04:02,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 04:04:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure atwrite_submit [2022-11-03 04:04:02,919 INFO L138 BoogieDeclarations]: Found implementation of procedure atwrite_submit [2022-11-03 04:04:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_3 [2022-11-03 04:04:02,919 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_3 [2022-11-03 04:04:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 04:04:02,919 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 04:04:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 04:04:02,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 04:04:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2022-11-03 04:04:02,920 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2022-11-03 04:04:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initcshw [2022-11-03 04:04:02,920 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initcshw [2022-11-03 04:04:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 04:04:02,921 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 04:04:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:04:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure get_usb_rcmsg [2022-11-03 04:04:02,921 INFO L138 BoogieDeclarations]: Found implementation of procedure get_usb_rcmsg [2022-11-03 04:04:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 04:04:02,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 04:04:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initbcshw [2022-11-03 04:04:02,922 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initbcshw [2022-11-03 04:04:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 04:04:02,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 04:04:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 04:04:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 04:04:02,922 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 04:04:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 04:04:02,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 04:04:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_3 [2022-11-03 04:04:02,923 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_3 [2022-11-03 04:04:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure error_reset [2022-11-03 04:04:02,923 INFO L138 BoogieDeclarations]: Found implementation of procedure error_reset [2022-11-03 04:04:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_isoc_input [2022-11-03 04:04:02,924 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_isoc_input [2022-11-03 04:04:02,924 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freecs [2022-11-03 04:04:02,924 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freecs [2022-11-03 04:04:02,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:04:02,924 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_suspend [2022-11-03 04:04:02,924 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_suspend [2022-11-03 04:04:02,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 04:04:02,925 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_3 [2022-11-03 04:04:02,925 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_3 [2022-11-03 04:04:02,925 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-03 04:04:02,925 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-03 04:04:02,925 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-03 04:04:02,925 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-03 04:04:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 04:04:02,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 04:04:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_disconnect [2022-11-03 04:04:02,926 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_disconnect [2022-11-03 04:04:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 04:04:02,926 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 04:04:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-03 04:04:02,927 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-03 04:04:02,927 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-11-03 04:04:02,927 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-11-03 04:04:02,927 INFO L130 BoogieDeclarations]: Found specification of procedure update_basstate [2022-11-03 04:04:02,927 INFO L138 BoogieDeclarations]: Found implementation of procedure update_basstate [2022-11-03 04:04:02,927 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-11-03 04:04:02,928 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-11-03 04:04:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:04:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure atread_submit [2022-11-03 04:04:02,928 INFO L138 BoogieDeclarations]: Found implementation of procedure atread_submit [2022-11-03 04:04:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_init_bchannel [2022-11-03 04:04:02,928 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_init_bchannel [2022-11-03 04:04:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-03 04:04:02,929 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-03 04:04:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:04:02,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:04:03,774 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:04:03,778 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:04:04,201 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 04:04:11,131 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:04:12,641 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:04:12,641 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 04:04:12,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:04:12 BoogieIcfgContainer [2022-11-03 04:04:12,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:04:12,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:04:12,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:04:12,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:04:12,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:03:57" (1/3) ... [2022-11-03 04:04:12,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41852455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:04:12, skipping insertion in model container [2022-11-03 04:04:12,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:01" (2/3) ... [2022-11-03 04:04:12,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41852455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:04:12, skipping insertion in model container [2022-11-03 04:04:12,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:04:12" (3/3) ... [2022-11-03 04:04:12,657 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2022-11-03 04:04:12,681 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:04:12,682 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:04:12,812 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:04:12,829 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;@1123c403, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:04:12,829 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:04:12,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 1237 states, 751 states have (on average 1.3501997336884155) internal successors, (1014), 795 states have internal predecessors, (1014), 396 states have call successors, (396), 89 states have call predecessors, (396), 88 states have return successors, (387), 368 states have call predecessors, (387), 387 states have call successors, (387) [2022-11-03 04:04:12,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-03 04:04:12,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:12,878 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:04:12,880 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:04:12,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:12,888 INFO L85 PathProgramCache]: Analyzing trace with hash -239893985, now seen corresponding path program 1 times [2022-11-03 04:04:12,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:04:12,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497215247] [2022-11-03 04:04:12,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:12,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:04:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:14,378 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-03 04:04:14,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:04:14,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497215247] [2022-11-03 04:04:14,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497215247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:04:14,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:04:14,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:04:14,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32277216] [2022-11-03 04:04:14,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:14,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:04:14,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:04:14,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:04:14,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:04:14,426 INFO L87 Difference]: Start difference. First operand has 1237 states, 751 states have (on average 1.3501997336884155) internal successors, (1014), 795 states have internal predecessors, (1014), 396 states have call successors, (396), 89 states have call predecessors, (396), 88 states have return successors, (387), 368 states have call predecessors, (387), 387 states have call successors, (387) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 04:04:16,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:04:20,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:20,096 INFO L93 Difference]: Finished difference Result 3391 states and 5052 transitions. [2022-11-03 04:04:20,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:04:20,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 125 [2022-11-03 04:04:20,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:20,147 INFO L225 Difference]: With dead ends: 3391 [2022-11-03 04:04:20,148 INFO L226 Difference]: Without dead ends: 2094 [2022-11-03 04:04:20,166 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 [2022-11-03 04:04:20,169 INFO L413 NwaCegarLoop]: 1866 mSDtfsCounter, 1362 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 3432 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:20,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1362 Valid, 3432 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 438 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-11-03 04:04:20,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2022-11-03 04:04:20,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 2091. [2022-11-03 04:04:20,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2091 states, 1289 states have (on average 1.34833204034135) internal successors, (1738), 1355 states have internal predecessors, (1738), 645 states have call successors, (645), 157 states have call predecessors, (645), 156 states have return successors, (644), 606 states have call predecessors, (644), 644 states have call successors, (644) [2022-11-03 04:04:20,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 3027 transitions. [2022-11-03 04:04:20,395 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 3027 transitions. Word has length 125 [2022-11-03 04:04:20,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:20,397 INFO L495 AbstractCegarLoop]: Abstraction has 2091 states and 3027 transitions. [2022-11-03 04:04:20,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 04:04:20,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 3027 transitions. [2022-11-03 04:04:20,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-03 04:04:20,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:20,410 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:04:20,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:04:20,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:04:20,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:20,411 INFO L85 PathProgramCache]: Analyzing trace with hash -201300843, now seen corresponding path program 1 times [2022-11-03 04:04:20,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:04:20,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543156658] [2022-11-03 04:04:20,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:20,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:04:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-03 04:04:21,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:04:21,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543156658] [2022-11-03 04:04:21,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543156658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:04:21,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:04:21,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:04:21,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050285978] [2022-11-03 04:04:21,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:21,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:04:21,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:04:21,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:04:21,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:04:21,128 INFO L87 Difference]: Start difference. First operand 2091 states and 3027 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-03 04:04:24,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:24,473 INFO L93 Difference]: Finished difference Result 5306 states and 7668 transitions. [2022-11-03 04:04:24,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:04:24,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 126 [2022-11-03 04:04:24,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:24,497 INFO L225 Difference]: With dead ends: 5306 [2022-11-03 04:04:24,498 INFO L226 Difference]: Without dead ends: 3240 [2022-11-03 04:04:24,508 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 [2022-11-03 04:04:24,510 INFO L413 NwaCegarLoop]: 1747 mSDtfsCounter, 1060 mSDsluCounter, 1594 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:24,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 3146 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-03 04:04:24,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2022-11-03 04:04:24,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 3237. [2022-11-03 04:04:24,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3237 states, 2000 states have (on average 1.3505) internal successors, (2701), 2124 states have internal predecessors, (2701), 986 states have call successors, (986), 251 states have call predecessors, (986), 250 states have return successors, (985), 911 states have call predecessors, (985), 985 states have call successors, (985) [2022-11-03 04:04:24,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4672 transitions. [2022-11-03 04:04:24,771 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4672 transitions. Word has length 126 [2022-11-03 04:04:24,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:24,772 INFO L495 AbstractCegarLoop]: Abstraction has 3237 states and 4672 transitions. [2022-11-03 04:04:24,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-03 04:04:24,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4672 transitions. [2022-11-03 04:04:24,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 04:04:24,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:24,775 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:04:24,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:04:24,776 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:04:24,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:24,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1325824749, now seen corresponding path program 1 times [2022-11-03 04:04:24,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:04:24,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002607039] [2022-11-03 04:04:24,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:24,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:04:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-03 04:04:25,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:04:25,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002607039] [2022-11-03 04:04:25,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002607039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:04:25,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:04:25,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:04:25,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134258082] [2022-11-03 04:04:25,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:25,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:04:25,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:04:25,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:04:25,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:04:25,455 INFO L87 Difference]: Start difference. First operand 3237 states and 4672 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 04:04:27,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:04:30,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:30,242 INFO L93 Difference]: Finished difference Result 3548 states and 5038 transitions. [2022-11-03 04:04:30,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:04:30,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2022-11-03 04:04:30,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:30,271 INFO L225 Difference]: With dead ends: 3548 [2022-11-03 04:04:30,271 INFO L226 Difference]: Without dead ends: 3545 [2022-11-03 04:04:30,275 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 [2022-11-03 04:04:30,281 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 1470 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:30,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1870 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 281 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-11-03 04:04:30,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3545 states. [2022-11-03 04:04:30,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3545 to 3501. [2022-11-03 04:04:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3501 states, 2156 states have (on average 1.3418367346938775) internal successors, (2893), 2286 states have internal predecessors, (2893), 1036 states have call successors, (1036), 317 states have call predecessors, (1036), 308 states have return successors, (1037), 951 states have call predecessors, (1037), 1035 states have call successors, (1037) [2022-11-03 04:04:30,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 4966 transitions. [2022-11-03 04:04:30,560 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 4966 transitions. Word has length 129 [2022-11-03 04:04:30,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:30,562 INFO L495 AbstractCegarLoop]: Abstraction has 3501 states and 4966 transitions. [2022-11-03 04:04:30,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 04:04:30,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 4966 transitions. [2022-11-03 04:04:30,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-03 04:04:30,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:30,571 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-03 04:04:30,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:04:30,572 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:04:30,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:30,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1013976395, now seen corresponding path program 1 times [2022-11-03 04:04:30,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:04:30,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570881280] [2022-11-03 04:04:30,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:30,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:04:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:31,588 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-03 04:04:31,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:04:31,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570881280] [2022-11-03 04:04:31,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570881280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:04:31,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:04:31,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:04:31,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295455272] [2022-11-03 04:04:31,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:31,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:04:31,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:04:31,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:04:31,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:04:31,592 INFO L87 Difference]: Start difference. First operand 3501 states and 4966 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 04:04:32,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:04:40,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:40,921 INFO L93 Difference]: Finished difference Result 13896 states and 20022 transitions. [2022-11-03 04:04:40,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:04:40,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 161 [2022-11-03 04:04:40,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:40,998 INFO L225 Difference]: With dead ends: 13896 [2022-11-03 04:04:40,998 INFO L226 Difference]: Without dead ends: 10423 [2022-11-03 04:04:41,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:04:41,019 INFO L413 NwaCegarLoop]: 2271 mSDtfsCounter, 4337 mSDsluCounter, 2741 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 733 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4337 SdHoareTripleChecker+Valid, 4620 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 733 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:41,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4337 Valid, 4620 Invalid, 2096 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [733 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-03 04:04:41,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10423 states. [2022-11-03 04:04:41,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10423 to 10365. [2022-11-03 04:04:41,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10365 states, 6404 states have (on average 1.3405683947532792) internal successors, (8585), 6766 states have internal predecessors, (8585), 3056 states have call successors, (3056), 929 states have call predecessors, (3056), 904 states have return successors, (3349), 2811 states have call predecessors, (3349), 3055 states have call successors, (3349) [2022-11-03 04:04:41,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10365 states to 10365 states and 14990 transitions. [2022-11-03 04:04:41,707 INFO L78 Accepts]: Start accepts. Automaton has 10365 states and 14990 transitions. Word has length 161 [2022-11-03 04:04:41,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:41,710 INFO L495 AbstractCegarLoop]: Abstraction has 10365 states and 14990 transitions. [2022-11-03 04:04:41,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 04:04:41,713 INFO L276 IsEmpty]: Start isEmpty. Operand 10365 states and 14990 transitions. [2022-11-03 04:04:41,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 04:04:41,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:41,717 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-03 04:04:41,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 04:04:41,718 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:04:41,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:41,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1775312200, now seen corresponding path program 1 times [2022-11-03 04:04:41,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:04:41,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803018952] [2022-11-03 04:04:41,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:41,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:04:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-03 04:04:42,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:04:42,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803018952] [2022-11-03 04:04:42,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803018952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:04:42,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:04:42,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:04:42,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809620668] [2022-11-03 04:04:42,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:42,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:04:42,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:04:42,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:04:42,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:04:42,574 INFO L87 Difference]: Start difference. First operand 10365 states and 14990 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 04:04:44,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:04:51,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:51,950 INFO L93 Difference]: Finished difference Result 41336 states and 61102 transitions. [2022-11-03 04:04:51,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:04:51,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 158 [2022-11-03 04:04:51,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:52,166 INFO L225 Difference]: With dead ends: 41336 [2022-11-03 04:04:52,167 INFO L226 Difference]: Without dead ends: 30999 [2022-11-03 04:04:52,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:04:52,229 INFO L413 NwaCegarLoop]: 2276 mSDtfsCounter, 3367 mSDsluCounter, 4254 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3367 SdHoareTripleChecker+Valid, 5980 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:52,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3367 Valid, 5980 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1550 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-11-03 04:04:52,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30999 states. [2022-11-03 04:04:54,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30999 to 30957. [2022-11-03 04:04:54,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30957 states, 19164 states have (on average 1.3396472552702985) internal successors, (25673), 20206 states have internal predecessors, (25673), 9100 states have call successors, (9100), 2765 states have call predecessors, (9100), 2692 states have return successors, (11285), 8391 states have call predecessors, (11285), 9099 states have call successors, (11285) [2022-11-03 04:04:54,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30957 states to 30957 states and 46058 transitions. [2022-11-03 04:04:54,391 INFO L78 Accepts]: Start accepts. Automaton has 30957 states and 46058 transitions. Word has length 158 [2022-11-03 04:04:54,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:54,392 INFO L495 AbstractCegarLoop]: Abstraction has 30957 states and 46058 transitions. [2022-11-03 04:04:54,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 04:04:54,392 INFO L276 IsEmpty]: Start isEmpty. Operand 30957 states and 46058 transitions. [2022-11-03 04:04:54,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-03 04:04:54,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:54,396 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-03 04:04:54,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 04:04:54,397 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:04:54,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:54,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1388164067, now seen corresponding path program 1 times [2022-11-03 04:04:54,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:04:54,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623133502] [2022-11-03 04:04:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:54,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:04:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:55,743 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-03 04:04:55,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:04:55,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623133502] [2022-11-03 04:04:55,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623133502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:04:55,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:04:55,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:04:55,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575026212] [2022-11-03 04:04:55,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:55,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:04:55,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:04:55,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:04:55,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:04:55,746 INFO L87 Difference]: Start difference. First operand 30957 states and 46058 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 04:04:57,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:05:07,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:07,623 INFO L93 Difference]: Finished difference Result 123656 states and 187926 transitions. [2022-11-03 04:05:07,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:05:07,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 159 [2022-11-03 04:05:07,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:08,502 INFO L225 Difference]: With dead ends: 123656 [2022-11-03 04:05:08,502 INFO L226 Difference]: Without dead ends: 92727 [2022-11-03 04:05:08,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:05:08,686 INFO L413 NwaCegarLoop]: 2267 mSDtfsCounter, 4316 mSDsluCounter, 2763 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 734 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4316 SdHoareTripleChecker+Valid, 4638 SdHoareTripleChecker+Invalid, 2073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:08,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4316 Valid, 4638 Invalid, 2073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 1338 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2022-11-03 04:05:08,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92727 states. [2022-11-03 04:05:14,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92727 to 92685. [2022-11-03 04:05:15,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92685 states, 57444 states have (on average 1.3383643200334239) internal successors, (76881), 60478 states have internal predecessors, (76881), 27184 states have call successors, (27184), 8273 states have call predecessors, (27184), 8056 states have return successors, (37693), 25131 states have call predecessors, (37693), 27183 states have call successors, (37693) [2022-11-03 04:05:15,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92685 states to 92685 states and 141758 transitions. [2022-11-03 04:05:15,751 INFO L78 Accepts]: Start accepts. Automaton has 92685 states and 141758 transitions. Word has length 159 [2022-11-03 04:05:15,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:15,752 INFO L495 AbstractCegarLoop]: Abstraction has 92685 states and 141758 transitions. [2022-11-03 04:05:15,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 04:05:15,753 INFO L276 IsEmpty]: Start isEmpty. Operand 92685 states and 141758 transitions. [2022-11-03 04:05:15,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-03 04:05:15,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:15,758 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-03 04:05:15,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 04:05:15,759 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:15,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:15,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1761422101, now seen corresponding path program 1 times [2022-11-03 04:05:15,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:15,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419932440] [2022-11-03 04:05:15,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:15,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:17,000 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-03 04:05:17,000 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:05:17,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419932440] [2022-11-03 04:05:17,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419932440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:17,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:17,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:05:17,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396991749] [2022-11-03 04:05:17,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:17,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:05:17,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:05:17,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:05:17,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:05:17,003 INFO L87 Difference]: Start difference. First operand 92685 states and 141758 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 04:05:19,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:05:26,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:26,205 INFO L93 Difference]: Finished difference Result 185244 states and 282879 transitions. [2022-11-03 04:05:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:05:26,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 163 [2022-11-03 04:05:26,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:27,158 INFO L225 Difference]: With dead ends: 185244 [2022-11-03 04:05:27,159 INFO L226 Difference]: Without dead ends: 92587 [2022-11-03 04:05:27,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:05:27,495 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 2637 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 731 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2637 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:27,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2637 Valid, 1566 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 213 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-03 04:05:27,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92587 states. [2022-11-03 04:05:32,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92587 to 92587. [2022-11-03 04:05:33,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92587 states, 57449 states have (on average 1.3345750143605632) internal successors, (76670), 60375 states have internal predecessors, (76670), 27078 states have call successors, (27078), 8276 states have call predecessors, (27078), 8059 states have return successors, (37195), 25133 states have call predecessors, (37195), 27077 states have call successors, (37195) [2022-11-03 04:05:33,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92587 states to 92587 states and 140943 transitions. [2022-11-03 04:05:33,512 INFO L78 Accepts]: Start accepts. Automaton has 92587 states and 140943 transitions. Word has length 163 [2022-11-03 04:05:33,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:33,513 INFO L495 AbstractCegarLoop]: Abstraction has 92587 states and 140943 transitions. [2022-11-03 04:05:33,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 04:05:33,513 INFO L276 IsEmpty]: Start isEmpty. Operand 92587 states and 140943 transitions. [2022-11-03 04:05:33,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-03 04:05:33,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:33,518 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-03 04:05:33,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 04:05:33,518 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:33,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:33,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1974267615, now seen corresponding path program 1 times [2022-11-03 04:05:33,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:33,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873718228] [2022-11-03 04:05:33,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:33,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-03 04:05:34,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:05:34,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873718228] [2022-11-03 04:05:34,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873718228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:34,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:34,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:05:34,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062924882] [2022-11-03 04:05:34,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:34,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:05:34,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:05:34,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:05:34,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:05:34,373 INFO L87 Difference]: Start difference. First operand 92587 states and 140943 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 04:05:36,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []