./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-08_1a-drivers--scsi--sg.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_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/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_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--sg.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/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_6612d2c0-5b84-40e9-8937-7987279c1371/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 884b97cc6fb4051ca91e84ac99a2a164f2566357f30136c91fcf54410ed45574 --- 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 03:51:04,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:51:04,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:51:04,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:51:04,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:51:04,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:51:04,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:51:04,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:51:04,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:51:04,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:51:04,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:51:04,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:51:04,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:51:04,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:51:04,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:51:04,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:51:04,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:51:04,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:51:04,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:51:04,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:51:04,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:51:04,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:51:04,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:51:04,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:51:04,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:51:04,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:51:04,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:51:04,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:51:04,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:51:04,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:51:04,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:51:04,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:51:04,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:51:04,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:51:04,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:51:04,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:51:04,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:51:04,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:51:04,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:51:04,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:51:04,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:51:04,152 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:51:04,175 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:51:04,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:51:04,176 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:51:04,176 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:51:04,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:51:04,177 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:51:04,177 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:51:04,177 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:51:04,177 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:51:04,178 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:51:04,178 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:51:04,178 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:51:04,178 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:51:04,178 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:51:04,178 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:51:04,179 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:51:04,179 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:51:04,179 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:51:04,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:51:04,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:51:04,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:51:04,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:51:04,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:51:04,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:51:04,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:51:04,181 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:51:04,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:51:04,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:51:04,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:51:04,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:51:04,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:51:04,182 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:51:04,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:51:04,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:51:04,187 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:51:04,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:51:04,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:51:04,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:51:04,188 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_6612d2c0-5b84-40e9-8937-7987279c1371/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 884b97cc6fb4051ca91e84ac99a2a164f2566357f30136c91fcf54410ed45574 [2022-11-03 03:51:04,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:51:04,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:51:04,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:51:04,458 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:51:04,460 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:51:04,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--sg.ko-entry_point.cil.out.i [2022-11-03 03:51:04,551 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/data/49b5be8f9/e49c95cf46b04ebda82a824f7572cc8c/FLAG950eff772 [2022-11-03 03:51:05,494 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:51:05,494 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--sg.ko-entry_point.cil.out.i [2022-11-03 03:51:05,545 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/data/49b5be8f9/e49c95cf46b04ebda82a824f7572cc8c/FLAG950eff772 [2022-11-03 03:51:05,852 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/data/49b5be8f9/e49c95cf46b04ebda82a824f7572cc8c [2022-11-03 03:51:05,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:51:05,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:51:05,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:51:05,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:51:05,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:51:05,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:51:05" (1/1) ... [2022-11-03 03:51:05,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31c63c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:05, skipping insertion in model container [2022-11-03 03:51:05,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:51:05" (1/1) ... [2022-11-03 03:51:05,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:51:06,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:51:08,489 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_6612d2c0-5b84-40e9-8937-7987279c1371/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--sg.ko-entry_point.cil.out.i[397949,397962] [2022-11-03 03:51:08,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:51:08,626 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:51:09,261 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_6612d2c0-5b84-40e9-8937-7987279c1371/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--sg.ko-entry_point.cil.out.i[397949,397962] [2022-11-03 03:51:09,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:51:09,349 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:51:09,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:09 WrapperNode [2022-11-03 03:51:09,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:51:09,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:51:09,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:51:09,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:51:09,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:09" (1/1) ... [2022-11-03 03:51:09,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:09" (1/1) ... [2022-11-03 03:51:09,732 INFO L138 Inliner]: procedures = 332, calls = 2835, calls flagged for inlining = 154, calls inlined = 147, statements flattened = 8636 [2022-11-03 03:51:09,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:51:09,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:51:09,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:51:09,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:51:09,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:09" (1/1) ... [2022-11-03 03:51:09,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:09" (1/1) ... [2022-11-03 03:51:09,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:09" (1/1) ... [2022-11-03 03:51:09,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:09" (1/1) ... [2022-11-03 03:51:09,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:09" (1/1) ... [2022-11-03 03:51:10,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:09" (1/1) ... [2022-11-03 03:51:10,101 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:09" (1/1) ... [2022-11-03 03:51:10,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:09" (1/1) ... [2022-11-03 03:51:10,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:51:10,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:51:10,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:51:10,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:51:10,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:09" (1/1) ... [2022-11-03 03:51:10,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:51:10,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:10,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:51:10,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:51:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 03:51:10,251 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 03:51:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure sg_finish_rem_req [2022-11-03 03:51:10,252 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_finish_rem_req [2022-11-03 03:51:10,252 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-03 03:51:10,252 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-03 03:51:10,252 INFO L130 BoogieDeclarations]: Found specification of procedure sg_rq_end_io_usercontext [2022-11-03 03:51:10,252 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_rq_end_io_usercontext [2022-11-03 03:51:10,252 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2022-11-03 03:51:10,253 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2022-11-03 03:51:10,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:51:10,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:51:10,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:51:10,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:51:10,253 INFO L130 BoogieDeclarations]: Found specification of procedure seq_puts [2022-11-03 03:51:10,254 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_puts [2022-11-03 03:51:10,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:51:10,254 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:51:10,254 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-03 03:51:10,255 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-03 03:51:10,255 INFO L130 BoogieDeclarations]: Found specification of procedure srp_done [2022-11-03 03:51:10,255 INFO L138 BoogieDeclarations]: Found implementation of procedure srp_done [2022-11-03 03:51:10,255 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2022-11-03 03:51:10,256 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2022-11-03 03:51:10,256 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-03 03:51:10,256 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-03 03:51:10,256 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 03:51:10,256 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 03:51:10,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:51:10,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:51:10,257 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2022-11-03 03:51:10,257 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2022-11-03 03:51:10,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-03 03:51:10,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-03 03:51:10,257 INFO L130 BoogieDeclarations]: Found specification of procedure sg_mmap [2022-11-03 03:51:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_mmap [2022-11-03 03:51:10,258 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-03 03:51:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-03 03:51:10,258 INFO L130 BoogieDeclarations]: Found specification of procedure sg_res_in_use [2022-11-03 03:51:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_res_in_use [2022-11-03 03:51:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 03:51:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 03:51:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:51:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:51:10,260 INFO L130 BoogieDeclarations]: Found specification of procedure sg_poll [2022-11-03 03:51:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_poll [2022-11-03 03:51:10,260 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2022-11-03 03:51:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2022-11-03 03:51:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2022-11-03 03:51:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure max_sectors_bytes [2022-11-03 03:51:10,262 INFO L138 BoogieDeclarations]: Found implementation of procedure max_sectors_bytes [2022-11-03 03:51:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_put [2022-11-03 03:51:10,262 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_put [2022-11-03 03:51:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 03:51:10,263 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 03:51:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:51:10,263 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:51:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:51:10,263 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:51:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure sg_remove_request [2022-11-03 03:51:10,264 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_remove_request [2022-11-03 03:51:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 03:51:10,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 03:51:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock_irqsave [2022-11-03 03:51:10,265 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock_irqsave [2022-11-03 03:51:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure sg_common_write [2022-11-03 03:51:10,265 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_common_write [2022-11-03 03:51:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:51:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 03:51:10,266 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 03:51:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:51:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2022-11-03 03:51:10,266 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2022-11-03 03:51:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-03 03:51:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:51:10,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:51:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irq [2022-11-03 03:51:10,267 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irq [2022-11-03 03:51:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure sg_proc_write_adio [2022-11-03 03:51:10,267 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_proc_write_adio [2022-11-03 03:51:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2022-11-03 03:51:10,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2022-11-03 03:51:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:51:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:51:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_seq_operations_7 [2022-11-03 03:51:10,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_seq_operations_7 [2022-11-03 03:51:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-03 03:51:10,269 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-03 03:51:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_autopm_put_device [2022-11-03 03:51:10,270 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_autopm_put_device [2022-11-03 03:51:10,271 INFO L130 BoogieDeclarations]: Found specification of procedure __chk_range_not_ok [2022-11-03 03:51:10,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __chk_range_not_ok [2022-11-03 03:51:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-03 03:51:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-03 03:51:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure dev_seq_stop [2022-11-03 03:51:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_seq_stop [2022-11-03 03:51:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2022-11-03 03:51:10,273 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2022-11-03 03:51:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 03:51:10,273 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 03:51:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 03:51:10,273 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 03:51:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:51:10,274 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:51:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 03:51:10,274 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 03:51:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure sg_get_rq_mark [2022-11-03 03:51:10,275 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_get_rq_mark [2022-11-03 03:51:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 03:51:10,275 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 03:51:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-03 03:51:10,279 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-03 03:51:10,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:51:10,279 INFO L130 BoogieDeclarations]: Found specification of procedure blk_trace_startstop [2022-11-03 03:51:10,279 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_trace_startstop [2022-11-03 03:51:10,279 INFO L130 BoogieDeclarations]: Found specification of procedure sg_allow_access [2022-11-03 03:51:10,281 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_allow_access [2022-11-03 03:51:10,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:51:10,282 INFO L130 BoogieDeclarations]: Found specification of procedure __rwlock_init [2022-11-03 03:51:10,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __rwlock_init [2022-11-03 03:51:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-11-03 03:51:10,288 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-11-03 03:51:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure dev_seq_start [2022-11-03 03:51:10,289 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_seq_start [2022-11-03 03:51:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure seq_open [2022-11-03 03:51:10,289 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_open [2022-11-03 03:51:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-03 03:51:10,290 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-03 03:51:10,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:51:10,290 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-11-03 03:51:10,290 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-11-03 03:51:10,290 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user [2022-11-03 03:51:10,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user [2022-11-03 03:51:10,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:51:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:51:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure sg_lookup_dev [2022-11-03 03:51:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_lookup_dev [2022-11-03 03:51:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure sg_remove_sfp_usercontext [2022-11-03 03:51:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_remove_sfp_usercontext [2022-11-03 03:51:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure sg_remove_scat [2022-11-03 03:51:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_remove_scat [2022-11-03 03:51:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure sg_fasync [2022-11-03 03:51:10,292 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_fasync [2022-11-03 03:51:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2022-11-03 03:51:10,292 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2022-11-03 03:51:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:51:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:51:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure kill_fasync [2022-11-03 03:51:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_fasync [2022-11-03 03:51:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2022-11-03 03:51:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2022-11-03 03:51:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2022-11-03 03:51:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:51:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 03:51:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 03:51:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-11-03 03:51:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-11-03 03:51:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure seq_release [2022-11-03 03:51:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_release [2022-11-03 03:51:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock_irqrestore [2022-11-03 03:51:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock_irqrestore [2022-11-03 03:51:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-03 03:51:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-03 03:51:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:51:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:51:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-03 03:51:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-03 03:51:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure sg_new_write [2022-11-03 03:51:10,296 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_new_write [2022-11-03 03:51:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2022-11-03 03:51:10,296 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2022-11-03 03:51:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 03:51:10,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 03:51:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:51:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 03:51:10,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 03:51:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2022-11-03 03:51:10,297 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2022-11-03 03:51:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:51:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irqsave [2022-11-03 03:51:10,297 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irqsave [2022-11-03 03:51:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:51:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure queue_max_segments [2022-11-03 03:51:10,297 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_max_segments [2022-11-03 03:51:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 03:51:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure sg_write [2022-11-03 03:51:10,298 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_write [2022-11-03 03:51:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:51:10,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:51:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure kref_init [2022-11-03 03:51:10,298 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_init [2022-11-03 03:51:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irqrestore [2022-11-03 03:51:10,298 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irqrestore [2022-11-03 03:51:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-03 03:51:10,298 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-03 03:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure dev_seq_next [2022-11-03 03:51:10,299 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_seq_next [2022-11-03 03:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure sg_new_read [2022-11-03 03:51:10,299 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_new_read [2022-11-03 03:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 03:51:10,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 03:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure sg_build_reserve [2022-11-03 03:51:10,299 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_build_reserve [2022-11-03 03:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 03:51:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 03:51:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure sg_add_request [2022-11-03 03:51:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_add_request [2022-11-03 03:51:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-03 03:51:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-03 03:51:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2022-11-03 03:51:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2022-11-03 03:51:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure sg_proc_write_dressz [2022-11-03 03:51:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_proc_write_dressz [2022-11-03 03:51:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 03:51:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 03:51:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure sg_build_indirect [2022-11-03 03:51:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_build_indirect [2022-11-03 03:51:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 03:51:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 03:51:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user [2022-11-03 03:51:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user [2022-11-03 03:51:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-11-03 03:51:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-11-03 03:51:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2022-11-03 03:51:10,302 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2022-11-03 03:51:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul_from_user [2022-11-03 03:51:10,302 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul_from_user [2022-11-03 03:51:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-03 03:51:10,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-03 03:51:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:51:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock [2022-11-03 03:51:10,302 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock [2022-11-03 03:51:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-03 03:51:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-03 03:51:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:51:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:51:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock [2022-11-03 03:51:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock [2022-11-03 03:51:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 03:51:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 03:51:11,521 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:51:11,528 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:51:11,939 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:51:12,011 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5379: SUMMARY for call __copy_to_user_nocheck_#t~ret199#1 := ldv__builtin_expect((if 0 != __copy_to_user_nocheck_~ret~2#1 then 1 else 0), 0); srcloc: null [2022-11-03 03:51:12,011 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5379-1: assume -9223372036854775808 <= __copy_to_user_nocheck_#t~ret199#1 && __copy_to_user_nocheck_#t~ret199#1 <= 9223372036854775807;__copy_to_user_nocheck_~tmp___1~4#1 := __copy_to_user_nocheck_#t~ret199#1;havoc __copy_to_user_nocheck_#t~ret199#1; [2022-11-03 03:51:12,012 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5367: SUMMARY for call __copy_to_user_nocheck_#t~ret198#1 := ldv__builtin_expect((if 0 != __copy_to_user_nocheck_~ret~2#1 then 1 else 0), 0); srcloc: null [2022-11-03 03:51:12,012 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5367-1: assume -9223372036854775808 <= __copy_to_user_nocheck_#t~ret198#1 && __copy_to_user_nocheck_#t~ret198#1 <= 9223372036854775807;__copy_to_user_nocheck_~tmp___0~8#1 := __copy_to_user_nocheck_#t~ret198#1;havoc __copy_to_user_nocheck_#t~ret198#1; [2022-11-03 03:51:12,013 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5388: assume __copy_to_user_nocheck_#t~switch197#1; [2022-11-03 03:51:12,013 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5388: assume !__copy_to_user_nocheck_#t~switch197#1; [2022-11-03 03:51:12,013 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5347: havoc __copy_to_user_nocheck_#t~switch197#1; [2022-11-03 03:51:12,013 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5380: assume 0 != __copy_to_user_nocheck_~tmp___1~4#1;__copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~2#1; [2022-11-03 03:51:12,014 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5380: assume !(0 != __copy_to_user_nocheck_~tmp___1~4#1);__copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~2#1; [2022-11-03 03:51:12,014 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5376: assume __copy_to_user_nocheck_#t~switch197#1; [2022-11-03 03:51:12,014 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5376: assume !__copy_to_user_nocheck_#t~switch197#1;__copy_to_user_nocheck_#t~switch197#1 := true; [2022-11-03 03:51:12,014 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5368: assume 0 != __copy_to_user_nocheck_~tmp___0~8#1;__copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~2#1; [2022-11-03 03:51:12,014 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5368: assume !(0 != __copy_to_user_nocheck_~tmp___0~8#1);__copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~2#1; [2022-11-03 03:51:12,014 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5364: assume __copy_to_user_nocheck_#t~switch197#1; [2022-11-03 03:51:12,015 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5364: assume !__copy_to_user_nocheck_#t~switch197#1;__copy_to_user_nocheck_#t~switch197#1 := __copy_to_user_nocheck_#t~switch197#1 || 16 == __copy_to_user_nocheck_~size#1; [2022-11-03 03:51:12,015 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5360: assume __copy_to_user_nocheck_#t~switch197#1;__copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~2#1; [2022-11-03 03:51:12,015 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5360: assume !__copy_to_user_nocheck_#t~switch197#1;__copy_to_user_nocheck_#t~switch197#1 := __copy_to_user_nocheck_#t~switch197#1 || 10 == __copy_to_user_nocheck_~size#1; [2022-11-03 03:51:12,015 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5389: SUMMARY for call __copy_to_user_nocheck_#t~ret200#1 := copy_user_generic(__copy_to_user_nocheck_~dst#1.base, __copy_to_user_nocheck_~dst#1.offset, __copy_to_user_nocheck_~src#1.base, __copy_to_user_nocheck_~src#1.offset, __copy_to_user_nocheck_~size#1); srcloc: null [2022-11-03 03:51:12,015 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5356: assume __copy_to_user_nocheck_#t~switch197#1;__copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~2#1; [2022-11-03 03:51:12,015 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5356: assume !__copy_to_user_nocheck_#t~switch197#1;__copy_to_user_nocheck_#t~switch197#1 := __copy_to_user_nocheck_#t~switch197#1 || 8 == __copy_to_user_nocheck_~size#1; [2022-11-03 03:51:12,015 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5389-1: __copy_to_user_nocheck_~tmp___2~4#1 := __copy_to_user_nocheck_#t~ret200#1;havoc __copy_to_user_nocheck_#t~ret200#1;__copy_to_user_nocheck_#res#1 := (if __copy_to_user_nocheck_~tmp___2~4#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_to_user_nocheck_~tmp___2~4#1 % 18446744073709551616 % 4294967296 else __copy_to_user_nocheck_~tmp___2~4#1 % 18446744073709551616 % 4294967296 - 4294967296); [2022-11-03 03:51:12,016 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume __copy_to_user_nocheck_#t~switch197#1;__copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~2#1; [2022-11-03 03:51:12,016 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5352: assume __copy_to_user_nocheck_#t~switch197#1;__copy_to_user_nocheck_#res#1 := __copy_to_user_nocheck_~ret~2#1; [2022-11-03 03:51:12,016 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5352: assume !__copy_to_user_nocheck_#t~switch197#1;__copy_to_user_nocheck_#t~switch197#1 := __copy_to_user_nocheck_#t~switch197#1 || 4 == __copy_to_user_nocheck_~size#1; [2022-11-03 03:51:12,016 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !__copy_to_user_nocheck_#t~switch197#1;__copy_to_user_nocheck_#t~switch197#1 := __copy_to_user_nocheck_#t~switch197#1 || 2 == __copy_to_user_nocheck_~size#1; [2022-11-03 03:51:15,516 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5312-1: assume -9223372036854775808 <= __copy_from_user_nocheck_#t~ret193#1 && __copy_from_user_nocheck_#t~ret193#1 <= 9223372036854775807;__copy_from_user_nocheck_~tmp___1~3#1 := __copy_from_user_nocheck_#t~ret193#1;havoc __copy_from_user_nocheck_#t~ret193#1; [2022-11-03 03:51:15,517 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5312: SUMMARY for call __copy_from_user_nocheck_#t~ret193#1 := ldv__builtin_expect((if 0 != __copy_from_user_nocheck_~ret~1#1 then 1 else 0), 0); srcloc: null [2022-11-03 03:51:15,517 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5308: assume __copy_from_user_nocheck_#t~switch191#1; [2022-11-03 03:51:15,517 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5308: assume !__copy_from_user_nocheck_#t~switch191#1;__copy_from_user_nocheck_#t~switch191#1 := true; [2022-11-03 03:51:15,517 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5300: assume 0 != __copy_from_user_nocheck_~tmp___0~7#1;__copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~1#1; [2022-11-03 03:51:15,517 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5300: assume !(0 != __copy_from_user_nocheck_~tmp___0~7#1);__copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~1#1; [2022-11-03 03:51:15,517 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5321: assume __copy_from_user_nocheck_#t~switch191#1; [2022-11-03 03:51:15,518 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5321: assume !__copy_from_user_nocheck_#t~switch191#1; [2022-11-03 03:51:15,518 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5313: assume 0 != __copy_from_user_nocheck_~tmp___1~3#1;__copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~1#1; [2022-11-03 03:51:15,518 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5313: assume !(0 != __copy_from_user_nocheck_~tmp___1~3#1);__copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~1#1; [2022-11-03 03:51:15,518 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5280: assume __copy_from_user_nocheck_#t~switch191#1;__copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~1#1; [2022-11-03 03:51:15,518 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5280: assume !__copy_from_user_nocheck_#t~switch191#1;__copy_from_user_nocheck_#t~switch191#1 := __copy_from_user_nocheck_#t~switch191#1 || 4 == __copy_from_user_nocheck_~size#1; [2022-11-03 03:51:15,518 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5322: SUMMARY for call __copy_from_user_nocheck_#t~ret194#1 := copy_user_generic(__copy_from_user_nocheck_~dst#1.base, __copy_from_user_nocheck_~dst#1.offset, __copy_from_user_nocheck_~src#1.base, __copy_from_user_nocheck_~src#1.offset, __copy_from_user_nocheck_~size#1); srcloc: null [2022-11-03 03:51:15,518 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5322-1: __copy_from_user_nocheck_~tmp___2~3#1 := __copy_from_user_nocheck_#t~ret194#1;havoc __copy_from_user_nocheck_#t~ret194#1;__copy_from_user_nocheck_#res#1 := (if __copy_from_user_nocheck_~tmp___2~3#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_from_user_nocheck_~tmp___2~3#1 % 18446744073709551616 % 4294967296 else __copy_from_user_nocheck_~tmp___2~3#1 % 18446744073709551616 % 4294967296 - 4294967296); [2022-11-03 03:51:15,519 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5285: assume __copy_from_user_nocheck_#t~switch191#1;__copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~1#1; [2022-11-03 03:51:15,519 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5285: assume !__copy_from_user_nocheck_#t~switch191#1;__copy_from_user_nocheck_#t~switch191#1 := __copy_from_user_nocheck_#t~switch191#1 || 8 == __copy_from_user_nocheck_~size#1; [2022-11-03 03:51:15,519 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5290: assume __copy_from_user_nocheck_#t~switch191#1;__copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~1#1; [2022-11-03 03:51:15,519 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5290: assume !__copy_from_user_nocheck_#t~switch191#1;__copy_from_user_nocheck_#t~switch191#1 := __copy_from_user_nocheck_#t~switch191#1 || 10 == __copy_from_user_nocheck_~size#1; [2022-11-03 03:51:15,519 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume __copy_from_user_nocheck_#t~switch191#1;__copy_from_user_nocheck_#res#1 := __copy_from_user_nocheck_~ret~1#1; [2022-11-03 03:51:15,519 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !__copy_from_user_nocheck_#t~switch191#1;__copy_from_user_nocheck_#t~switch191#1 := __copy_from_user_nocheck_#t~switch191#1 || 2 == __copy_from_user_nocheck_~size#1; [2022-11-03 03:51:15,519 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5274: havoc __copy_from_user_nocheck_#t~switch191#1; [2022-11-03 03:51:15,522 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5299: SUMMARY for call __copy_from_user_nocheck_#t~ret192#1 := ldv__builtin_expect((if 0 != __copy_from_user_nocheck_~ret~1#1 then 1 else 0), 0); srcloc: null [2022-11-03 03:51:15,522 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5299-1: assume -9223372036854775808 <= __copy_from_user_nocheck_#t~ret192#1 && __copy_from_user_nocheck_#t~ret192#1 <= 9223372036854775807;__copy_from_user_nocheck_~tmp___0~7#1 := __copy_from_user_nocheck_#t~ret192#1;havoc __copy_from_user_nocheck_#t~ret192#1; [2022-11-03 03:51:15,522 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5295: assume __copy_from_user_nocheck_#t~switch191#1; [2022-11-03 03:51:15,522 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L5295: assume !__copy_from_user_nocheck_#t~switch191#1;__copy_from_user_nocheck_#t~switch191#1 := __copy_from_user_nocheck_#t~switch191#1 || 16 == __copy_from_user_nocheck_~size#1; [2022-11-03 03:51:19,985 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:51:23,199 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:51:23,200 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:51:23,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:51:23 BoogieIcfgContainer [2022-11-03 03:51:23,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:51:23,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:51:23,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:51:23,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:51:23,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:51:05" (1/3) ... [2022-11-03 03:51:23,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560c859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:51:23, skipping insertion in model container [2022-11-03 03:51:23,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:09" (2/3) ... [2022-11-03 03:51:23,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560c859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:51:23, skipping insertion in model container [2022-11-03 03:51:23,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:51:23" (3/3) ... [2022-11-03 03:51:23,216 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--sg.ko-entry_point.cil.out.i [2022-11-03 03:51:23,235 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:51:23,235 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:51:23,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:51:23,349 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;@127c6a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:51:23,349 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:51:23,360 INFO L276 IsEmpty]: Start isEmpty. Operand has 1917 states, 1221 states have (on average 1.4021294021294022) internal successors, (1712), 1266 states have internal predecessors, (1712), 585 states have call successors, (585), 110 states have call predecessors, (585), 109 states have return successors, (568), 566 states have call predecessors, (568), 568 states have call successors, (568) [2022-11-03 03:51:23,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2022-11-03 03:51:23,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:23,405 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:51:23,406 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:23,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:23,411 INFO L85 PathProgramCache]: Analyzing trace with hash 517437694, now seen corresponding path program 1 times [2022-11-03 03:51:23,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:23,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947081074] [2022-11-03 03:51:23,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:23,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:25,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6946 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6946 trivial. 0 not checked. [2022-11-03 03:51:25,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:25,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947081074] [2022-11-03 03:51:25,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947081074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:25,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:25,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:51:25,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048992689] [2022-11-03 03:51:25,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:25,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:25,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:25,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:25,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:25,944 INFO L87 Difference]: Start difference. First operand has 1917 states, 1221 states have (on average 1.4021294021294022) internal successors, (1712), 1266 states have internal predecessors, (1712), 585 states have call successors, (585), 110 states have call predecessors, (585), 109 states have return successors, (568), 566 states have call predecessors, (568), 568 states have call successors, (568) Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-03 03:51:28,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:32,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:34,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:36,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:36,001 INFO L93 Difference]: Finished difference Result 5479 states and 8239 transitions. [2022-11-03 03:51:36,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:36,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 628 [2022-11-03 03:51:36,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:36,049 INFO L225 Difference]: With dead ends: 5479 [2022-11-03 03:51:36,050 INFO L226 Difference]: Without dead ends: 3631 [2022-11-03 03:51:36,062 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 03:51:36,066 INFO L413 NwaCegarLoop]: 3100 mSDtfsCounter, 2692 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2694 SdHoareTripleChecker+Valid, 5461 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:36,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2694 Valid, 5461 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 648 Invalid, 3 Unknown, 0 Unchecked, 9.7s Time] [2022-11-03 03:51:36,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2022-11-03 03:51:36,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 3627. [2022-11-03 03:51:36,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 2348 states have (on average 1.3960817717206133) internal successors, (3278), 2399 states have internal predecessors, (3278), 1065 states have call successors, (1065), 214 states have call predecessors, (1065), 213 states have return successors, (1065), 1058 states have call predecessors, (1065), 1063 states have call successors, (1065) [2022-11-03 03:51:36,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 5408 transitions. [2022-11-03 03:51:36,656 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 5408 transitions. Word has length 628 [2022-11-03 03:51:36,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:36,681 INFO L495 AbstractCegarLoop]: Abstraction has 3627 states and 5408 transitions. [2022-11-03 03:51:36,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-03 03:51:36,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 5408 transitions. [2022-11-03 03:51:36,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2022-11-03 03:51:36,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:36,710 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 26, 26, 26, 26, 26, 26, 26, 26, 26, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:51:36,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:51:36,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:36,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:36,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1507232059, now seen corresponding path program 1 times [2022-11-03 03:51:36,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:36,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084241610] [2022-11-03 03:51:36,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:36,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:39,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6952 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6952 trivial. 0 not checked. [2022-11-03 03:51:39,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:39,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084241610] [2022-11-03 03:51:39,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084241610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:39,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:39,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:51:39,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896017200] [2022-11-03 03:51:39,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:39,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:51:39,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:39,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:51:39,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:39,866 INFO L87 Difference]: Start difference. First operand 3627 states and 5408 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-03 03:51:41,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:48,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:51,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:51,649 INFO L93 Difference]: Finished difference Result 10606 states and 15858 transitions. [2022-11-03 03:51:51,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:51:51,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 662 [2022-11-03 03:51:51,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:51,702 INFO L225 Difference]: With dead ends: 10606 [2022-11-03 03:51:51,703 INFO L226 Difference]: Without dead ends: 7102 [2022-11-03 03:51:51,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:51,723 INFO L413 NwaCegarLoop]: 2745 mSDtfsCounter, 3341 mSDsluCounter, 3899 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 348 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3666 SdHoareTripleChecker+Valid, 5994 SdHoareTripleChecker+Invalid, 3024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:51,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3666 Valid, 5994 Invalid, 3024 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [348 Valid, 2674 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2022-11-03 03:51:51,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7102 states. [2022-11-03 03:51:52,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7102 to 7073. [2022-11-03 03:51:52,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7073 states, 4599 states have (on average 1.4029136768862795) internal successors, (6452), 4703 states have internal predecessors, (6452), 2055 states have call successors, (2055), 419 states have call predecessors, (2055), 418 states have return successors, (2091), 2040 states have call predecessors, (2091), 2053 states have call successors, (2091) [2022-11-03 03:51:52,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7073 states to 7073 states and 10598 transitions. [2022-11-03 03:51:52,310 INFO L78 Accepts]: Start accepts. Automaton has 7073 states and 10598 transitions. Word has length 662 [2022-11-03 03:51:52,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:52,313 INFO L495 AbstractCegarLoop]: Abstraction has 7073 states and 10598 transitions. [2022-11-03 03:51:52,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-03 03:51:52,314 INFO L276 IsEmpty]: Start isEmpty. Operand 7073 states and 10598 transitions. [2022-11-03 03:51:52,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2022-11-03 03:51:52,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:52,343 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 26, 26, 26, 26, 26, 26, 26, 26, 26, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:51:52,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:51:52,344 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:52,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:52,355 INFO L85 PathProgramCache]: Analyzing trace with hash 427221252, now seen corresponding path program 1 times [2022-11-03 03:51:52,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:52,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795968918] [2022-11-03 03:51:52,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:52,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6952 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6952 trivial. 0 not checked. [2022-11-03 03:51:55,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:55,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795968918] [2022-11-03 03:51:55,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795968918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:55,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:55,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:51:55,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530155528] [2022-11-03 03:51:55,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:55,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:51:55,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:55,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:51:55,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:55,360 INFO L87 Difference]: Start difference. First operand 7073 states and 10598 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-03 03:51:57,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:04,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:05,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:07,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:11,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:11,108 INFO L93 Difference]: Finished difference Result 14048 states and 21038 transitions. [2022-11-03 03:52:11,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:52:11,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 659 [2022-11-03 03:52:11,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:11,151 INFO L225 Difference]: With dead ends: 14048 [2022-11-03 03:52:11,152 INFO L226 Difference]: Without dead ends: 7098 [2022-11-03 03:52:11,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:52:11,179 INFO L413 NwaCegarLoop]: 2737 mSDtfsCounter, 1931 mSDsluCounter, 7592 mSDsCounter, 0 mSdLazyCounter, 3073 mSolverCounterSat, 343 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2256 SdHoareTripleChecker+Valid, 9354 SdHoareTripleChecker+Invalid, 3418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 3073 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:11,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2256 Valid, 9354 Invalid, 3418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 3073 Invalid, 2 Unknown, 0 Unchecked, 15.3s Time] [2022-11-03 03:52:11,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7098 states. [2022-11-03 03:52:11,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7098 to 7069. [2022-11-03 03:52:11,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7069 states, 4597 states have (on average 1.4026539047204698) internal successors, (6448), 4701 states have internal predecessors, (6448), 2053 states have call successors, (2053), 419 states have call predecessors, (2053), 418 states have return successors, (2087), 2038 states have call predecessors, (2087), 2051 states have call successors, (2087) [2022-11-03 03:52:11,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7069 states to 7069 states and 10588 transitions. [2022-11-03 03:52:11,604 INFO L78 Accepts]: Start accepts. Automaton has 7069 states and 10588 transitions. Word has length 659 [2022-11-03 03:52:11,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:11,606 INFO L495 AbstractCegarLoop]: Abstraction has 7069 states and 10588 transitions. [2022-11-03 03:52:11,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-03 03:52:11,607 INFO L276 IsEmpty]: Start isEmpty. Operand 7069 states and 10588 transitions. [2022-11-03 03:52:11,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2022-11-03 03:52:11,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:11,629 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 26, 26, 26, 26, 26, 26, 26, 26, 26, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:52:11,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:52:11,629 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:52:11,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:11,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1236504435, now seen corresponding path program 1 times [2022-11-03 03:52:11,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:11,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621761306] [2022-11-03 03:52:11,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:11,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:13,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6952 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6952 trivial. 0 not checked. [2022-11-03 03:52:13,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:13,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621761306] [2022-11-03 03:52:13,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621761306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:13,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:14,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:52:14,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142338647] [2022-11-03 03:52:14,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:14,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:52:14,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:14,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:52:14,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:52:14,002 INFO L87 Difference]: Start difference. First operand 7069 states and 10588 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-03 03:52:16,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:22,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:24,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:26,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:28,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:28,479 INFO L93 Difference]: Finished difference Result 14040 states and 21018 transitions. [2022-11-03 03:52:28,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:52:28,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 661 [2022-11-03 03:52:28,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:28,545 INFO L225 Difference]: With dead ends: 14040 [2022-11-03 03:52:28,545 INFO L226 Difference]: Without dead ends: 7094 [2022-11-03 03:52:28,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:52:28,578 INFO L413 NwaCegarLoop]: 2735 mSDtfsCounter, 1929 mSDsluCounter, 7589 mSDsCounter, 0 mSdLazyCounter, 3066 mSolverCounterSat, 341 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2254 SdHoareTripleChecker+Valid, 9351 SdHoareTripleChecker+Invalid, 3410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 3066 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:28,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2254 Valid, 9351 Invalid, 3410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 3066 Invalid, 3 Unknown, 0 Unchecked, 14.0s Time] [2022-11-03 03:52:28,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7094 states. [2022-11-03 03:52:29,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7094 to 7065. [2022-11-03 03:52:29,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7065 states, 4595 states have (on average 1.4023939064200217) internal successors, (6444), 4699 states have internal predecessors, (6444), 2051 states have call successors, (2051), 419 states have call predecessors, (2051), 418 states have return successors, (2083), 2036 states have call predecessors, (2083), 2049 states have call successors, (2083) [2022-11-03 03:52:29,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7065 states to 7065 states and 10578 transitions. [2022-11-03 03:52:29,065 INFO L78 Accepts]: Start accepts. Automaton has 7065 states and 10578 transitions. Word has length 661 [2022-11-03 03:52:29,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:29,067 INFO L495 AbstractCegarLoop]: Abstraction has 7065 states and 10578 transitions. [2022-11-03 03:52:29,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-03 03:52:29,068 INFO L276 IsEmpty]: Start isEmpty. Operand 7065 states and 10578 transitions. [2022-11-03 03:52:29,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2022-11-03 03:52:29,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:29,078 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 26, 26, 26, 26, 26, 26, 26, 26, 26, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:52:29,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:52:29,078 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:52:29,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:29,079 INFO L85 PathProgramCache]: Analyzing trace with hash -686244836, now seen corresponding path program 1 times [2022-11-03 03:52:29,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:29,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878798617] [2022-11-03 03:52:29,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:29,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 6952 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6952 trivial. 0 not checked. [2022-11-03 03:52:31,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:31,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878798617] [2022-11-03 03:52:31,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878798617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:31,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:31,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:52:31,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397867379] [2022-11-03 03:52:31,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:31,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:52:31,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:31,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:52:31,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:52:31,505 INFO L87 Difference]: Start difference. First operand 7065 states and 10578 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-03 03:52:33,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:38,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:41,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:43,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:43,726 INFO L93 Difference]: Finished difference Result 14274 states and 21314 transitions. [2022-11-03 03:52:43,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:52:43,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 660 [2022-11-03 03:52:43,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:43,773 INFO L225 Difference]: With dead ends: 14274 [2022-11-03 03:52:43,774 INFO L226 Difference]: Without dead ends: 7332 [2022-11-03 03:52:43,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:52:43,800 INFO L413 NwaCegarLoop]: 2681 mSDtfsCounter, 2987 mSDsluCounter, 5158 mSDsCounter, 0 mSdLazyCounter, 2015 mSolverCounterSat, 665 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3312 SdHoareTripleChecker+Valid, 7212 SdHoareTripleChecker+Invalid, 2682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 665 IncrementalHoareTripleChecker+Valid, 2015 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:43,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3312 Valid, 7212 Invalid, 2682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [665 Valid, 2015 Invalid, 2 Unknown, 0 Unchecked, 11.8s Time] [2022-11-03 03:52:43,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2022-11-03 03:52:44,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 7303. [2022-11-03 03:52:44,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7303 states, 4742 states have (on average 1.3985660059046816) internal successors, (6632), 4849 states have internal predecessors, (6632), 2109 states have call successors, (2109), 451 states have call predecessors, (2109), 451 states have return successors, (2143), 2094 states have call predecessors, (2143), 2107 states have call successors, (2143) [2022-11-03 03:52:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 10884 transitions. [2022-11-03 03:52:44,376 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 10884 transitions. Word has length 660 [2022-11-03 03:52:44,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:44,377 INFO L495 AbstractCegarLoop]: Abstraction has 7303 states and 10884 transitions. [2022-11-03 03:52:44,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-03 03:52:44,377 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 10884 transitions. [2022-11-03 03:52:44,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2022-11-03 03:52:44,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:44,396 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 26, 26, 26, 26, 26, 26, 26, 26, 26, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:44,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:52:44,397 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:52:44,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:44,399 INFO L85 PathProgramCache]: Analyzing trace with hash -657366708, now seen corresponding path program 1 times [2022-11-03 03:52:44,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:44,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909989009] [2022-11-03 03:52:44,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:44,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:46,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6997 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6988 trivial. 0 not checked. [2022-11-03 03:52:46,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:46,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909989009] [2022-11-03 03:52:46,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909989009] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:52:46,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901723624] [2022-11-03 03:52:46,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:46,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:52:46,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:52:46,764 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:52:46,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:52:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:49,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 8811 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:52:49,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:52:49,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6997 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6964 trivial. 0 not checked. [2022-11-03 03:52:49,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:52:49,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901723624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:50,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:52:50,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2022-11-03 03:52:50,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945642575] [2022-11-03 03:52:50,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:50,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:52:50,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:50,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:52:50,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:52:50,003 INFO L87 Difference]: Start difference. First operand 7303 states and 10884 transitions. Second operand has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 4 states have call successors, (82), 5 states have call predecessors, (82), 2 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) [2022-11-03 03:52:52,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:57,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:58,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:00,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:02,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:04,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:06,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:08,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:10,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:12,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:14,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:15,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:15,501 INFO L93 Difference]: Finished difference Result 14425 states and 21565 transitions. [2022-11-03 03:53:15,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:53:15,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 4 states have call successors, (82), 5 states have call predecessors, (82), 2 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) Word has length 703 [2022-11-03 03:53:15,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:15,537 INFO L225 Difference]: With dead ends: 14425 [2022-11-03 03:53:15,538 INFO L226 Difference]: Without dead ends: 7245 [2022-11-03 03:53:15,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:53:15,562 INFO L413 NwaCegarLoop]: 2488 mSDtfsCounter, 30 mSDsluCounter, 13948 mSDsCounter, 0 mSdLazyCounter, 1947 mSolverCounterSat, 13 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 14873 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1947 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:15,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 14873 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1947 Invalid, 5 Unknown, 0 Unchecked, 25.1s Time] [2022-11-03 03:53:15,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7245 states. [2022-11-03 03:53:15,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7245 to 7245. [2022-11-03 03:53:15,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7245 states, 4712 states have (on average 1.3979202037351444) internal successors, (6587), 4809 states have internal predecessors, (6587), 2085 states have call successors, (2085), 447 states have call predecessors, (2085), 447 states have return successors, (2113), 2074 states have call predecessors, (2113), 2083 states have call successors, (2113) [2022-11-03 03:53:16,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7245 states to 7245 states and 10785 transitions. [2022-11-03 03:53:16,010 INFO L78 Accepts]: Start accepts. Automaton has 7245 states and 10785 transitions. Word has length 703 [2022-11-03 03:53:16,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:16,012 INFO L495 AbstractCegarLoop]: Abstraction has 7245 states and 10785 transitions. [2022-11-03 03:53:16,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 4 states have call successors, (82), 5 states have call predecessors, (82), 2 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) [2022-11-03 03:53:16,012 INFO L276 IsEmpty]: Start isEmpty. Operand 7245 states and 10785 transitions. [2022-11-03 03:53:16,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2022-11-03 03:53:16,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:16,032 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 26, 26, 26, 26, 26, 26, 26, 26, 26, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:16,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:16,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 03:53:16,243 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:16,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:16,244 INFO L85 PathProgramCache]: Analyzing trace with hash -760112211, now seen corresponding path program 1 times [2022-11-03 03:53:16,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:16,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103793066] [2022-11-03 03:53:16,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:16,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6993 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6989 trivial. 0 not checked. [2022-11-03 03:53:17,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:17,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103793066] [2022-11-03 03:53:17,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103793066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:17,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:17,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:53:17,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357564643] [2022-11-03 03:53:17,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:17,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:53:17,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:17,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:53:17,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:17,442 INFO L87 Difference]: Start difference. First operand 7245 states and 10785 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2022-11-03 03:53:19,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:22,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:23,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:27,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:28,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:28,307 INFO L93 Difference]: Finished difference Result 21069 states and 31333 transitions. [2022-11-03 03:53:28,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:28,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) Word has length 762 [2022-11-03 03:53:28,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:28,363 INFO L225 Difference]: With dead ends: 21069 [2022-11-03 03:53:28,363 INFO L226 Difference]: Without dead ends: 13947 [2022-11-03 03:53:28,387 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 03:53:28,388 INFO L413 NwaCegarLoop]: 2966 mSDtfsCounter, 2455 mSDsluCounter, 2805 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2455 SdHoareTripleChecker+Valid, 5460 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:28,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2455 Valid, 5460 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 638 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2022-11-03 03:53:28,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13947 states. [2022-11-03 03:53:29,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13947 to 13935. [2022-11-03 03:53:29,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13935 states, 9117 states have (on average 1.4034221783481409) internal successors, (12795), 9307 states have internal predecessors, (12795), 3932 states have call successors, (3932), 884 states have call predecessors, (3932), 885 states have return successors, (3988), 3907 states have call predecessors, (3988), 3930 states have call successors, (3988) [2022-11-03 03:53:29,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13935 states to 13935 states and 20715 transitions. [2022-11-03 03:53:29,231 INFO L78 Accepts]: Start accepts. Automaton has 13935 states and 20715 transitions. Word has length 762 [2022-11-03 03:53:29,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:29,232 INFO L495 AbstractCegarLoop]: Abstraction has 13935 states and 20715 transitions. [2022-11-03 03:53:29,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2022-11-03 03:53:29,233 INFO L276 IsEmpty]: Start isEmpty. Operand 13935 states and 20715 transitions. [2022-11-03 03:53:29,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2022-11-03 03:53:29,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:29,253 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 26, 26, 26, 26, 26, 26, 26, 26, 26, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:29,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:53:29,254 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:29,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:29,254 INFO L85 PathProgramCache]: Analyzing trace with hash -959663403, now seen corresponding path program 1 times [2022-11-03 03:53:29,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:29,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355804767] [2022-11-03 03:53:29,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:29,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6993 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6989 trivial. 0 not checked. [2022-11-03 03:53:30,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:30,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355804767] [2022-11-03 03:53:30,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355804767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:30,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:30,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:53:30,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590030834] [2022-11-03 03:53:30,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:30,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:53:30,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:30,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:53:30,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:30,327 INFO L87 Difference]: Start difference. First operand 13935 states and 20715 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-03 03:53:32,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:36,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:38,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:40,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:41,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:41,439 INFO L93 Difference]: Finished difference Result 33627 states and 49719 transitions. [2022-11-03 03:53:41,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:41,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 784 [2022-11-03 03:53:41,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:41,528 INFO L225 Difference]: With dead ends: 33627 [2022-11-03 03:53:41,528 INFO L226 Difference]: Without dead ends: 19815 [2022-11-03 03:53:41,572 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 03:53:41,573 INFO L413 NwaCegarLoop]: 2805 mSDtfsCounter, 1349 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 5091 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:41,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 5091 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 688 Invalid, 2 Unknown, 0 Unchecked, 10.4s Time] [2022-11-03 03:53:41,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19815 states. [2022-11-03 03:53:42,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19815 to 19787. [2022-11-03 03:53:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19787 states, 13097 states have (on average 1.408948614186455) internal successors, (18453), 13367 states have internal predecessors, (18453), 5306 states have call successors, (5306), 1382 states have call predecessors, (5306), 1383 states have return successors, (5392), 5273 states have call predecessors, (5392), 5304 states have call successors, (5392) [2022-11-03 03:53:42,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19787 states to 19787 states and 29151 transitions. [2022-11-03 03:53:42,843 INFO L78 Accepts]: Start accepts. Automaton has 19787 states and 29151 transitions. Word has length 784 [2022-11-03 03:53:42,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:42,844 INFO L495 AbstractCegarLoop]: Abstraction has 19787 states and 29151 transitions. [2022-11-03 03:53:42,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-03 03:53:42,844 INFO L276 IsEmpty]: Start isEmpty. Operand 19787 states and 29151 transitions. [2022-11-03 03:53:42,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2022-11-03 03:53:42,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:42,856 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 26, 26, 26, 26, 26, 26, 26, 26, 26, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:42,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:53:42,856 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:42,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:42,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1012940673, now seen corresponding path program 1 times [2022-11-03 03:53:42,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:42,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022461210] [2022-11-03 03:53:42,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:42,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:44,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7005 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7001 trivial. 0 not checked. [2022-11-03 03:53:44,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:44,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022461210] [2022-11-03 03:53:44,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022461210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:44,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:44,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:53:44,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850195412] [2022-11-03 03:53:44,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:44,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:53:44,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:44,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:53:44,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:53:44,929 INFO L87 Difference]: Start difference. First operand 19787 states and 29151 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-11-03 03:53:46,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:55,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:58,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:59,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:01,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:03,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:03,893 INFO L93 Difference]: Finished difference Result 39449 states and 58093 transitions. [2022-11-03 03:54:03,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:54:03,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) Word has length 751 [2022-11-03 03:54:03,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:03,983 INFO L225 Difference]: With dead ends: 39449 [2022-11-03 03:54:03,983 INFO L226 Difference]: Without dead ends: 19785 [2022-11-03 03:54:04,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:54:04,031 INFO L413 NwaCegarLoop]: 2157 mSDtfsCounter, 1962 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 335 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2295 SdHoareTripleChecker+Valid, 3470 SdHoareTripleChecker+Invalid, 2737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:04,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2295 Valid, 3470 Invalid, 2737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2400 Invalid, 2 Unknown, 0 Unchecked, 17.9s Time] [2022-11-03 03:54:04,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19785 states. [2022-11-03 03:54:05,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19785 to 19768. [2022-11-03 03:54:05,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19768 states, 13088 states have (on average 1.4080837408312958) internal successors, (18429), 13358 states have internal predecessors, (18429), 5292 states have call successors, (5292), 1386 states have call predecessors, (5292), 1387 states have return successors, (5370), 5259 states have call predecessors, (5370), 5290 states have call successors, (5370) [2022-11-03 03:54:05,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19768 states to 19768 states and 29091 transitions. [2022-11-03 03:54:05,416 INFO L78 Accepts]: Start accepts. Automaton has 19768 states and 29091 transitions. Word has length 751 [2022-11-03 03:54:05,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:05,417 INFO L495 AbstractCegarLoop]: Abstraction has 19768 states and 29091 transitions. [2022-11-03 03:54:05,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-11-03 03:54:05,418 INFO L276 IsEmpty]: Start isEmpty. Operand 19768 states and 29091 transitions. [2022-11-03 03:54:05,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2022-11-03 03:54:05,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:05,431 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 26, 26, 26, 26, 26, 26, 26, 26, 26, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:05,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:54:05,432 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:05,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:05,432 INFO L85 PathProgramCache]: Analyzing trace with hash -364747541, now seen corresponding path program 1 times [2022-11-03 03:54:05,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:05,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986046284] [2022-11-03 03:54:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:05,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 7005 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7001 trivial. 0 not checked. [2022-11-03 03:54:07,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:07,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986046284] [2022-11-03 03:54:07,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986046284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:07,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:07,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:54:07,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877230212] [2022-11-03 03:54:07,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:07,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:54:07,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:07,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:54:07,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:54:07,709 INFO L87 Difference]: Start difference. First operand 19768 states and 29091 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-11-03 03:54:09,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:16,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:18,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:21,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:23,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:23,746 INFO L93 Difference]: Finished difference Result 39385 states and 57949 transitions. [2022-11-03 03:54:23,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:54:23,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) Word has length 754 [2022-11-03 03:54:23,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:23,935 INFO L225 Difference]: With dead ends: 39385 [2022-11-03 03:54:23,935 INFO L226 Difference]: Without dead ends: 19753 [2022-11-03 03:54:23,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:54:23,984 INFO L413 NwaCegarLoop]: 2154 mSDtfsCounter, 3367 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 335 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3699 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 2720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:23,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3699 Valid, 3095 Invalid, 2720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2382 Invalid, 3 Unknown, 0 Unchecked, 14.9s Time] [2022-11-03 03:54:24,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19753 states. [2022-11-03 03:54:25,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19753 to 19736. [2022-11-03 03:54:25,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19736 states, 13072 states have (on average 1.407359241126071) internal successors, (18397), 13342 states have internal predecessors, (18397), 5276 states have call successors, (5276), 1386 states have call predecessors, (5276), 1387 states have return successors, (5346), 5243 states have call predecessors, (5346), 5274 states have call successors, (5346) [2022-11-03 03:54:25,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19736 states to 19736 states and 29019 transitions. [2022-11-03 03:54:25,330 INFO L78 Accepts]: Start accepts. Automaton has 19736 states and 29019 transitions. Word has length 754 [2022-11-03 03:54:25,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:25,331 INFO L495 AbstractCegarLoop]: Abstraction has 19736 states and 29019 transitions. [2022-11-03 03:54:25,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-11-03 03:54:25,332 INFO L276 IsEmpty]: Start isEmpty. Operand 19736 states and 29019 transitions. [2022-11-03 03:54:25,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2022-11-03 03:54:25,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:25,345 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 26, 26, 26, 26, 26, 26, 26, 26, 26, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:25,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:54:25,345 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:25,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:25,346 INFO L85 PathProgramCache]: Analyzing trace with hash -370449690, now seen corresponding path program 1 times [2022-11-03 03:54:25,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:25,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006164403] [2022-11-03 03:54:25,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:25,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:27,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7005 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7001 trivial. 0 not checked. [2022-11-03 03:54:27,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:27,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006164403] [2022-11-03 03:54:27,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006164403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:27,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:27,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:54:27,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999561697] [2022-11-03 03:54:27,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:27,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:54:27,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:27,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:54:27,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:54:27,358 INFO L87 Difference]: Start difference. First operand 19736 states and 29019 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-11-03 03:54:29,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:35,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:37,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:41,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:41,285 INFO L93 Difference]: Finished difference Result 39781 states and 58399 transitions. [2022-11-03 03:54:41,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:54:41,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) Word has length 755 [2022-11-03 03:54:41,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:41,363 INFO L225 Difference]: With dead ends: 39781 [2022-11-03 03:54:41,363 INFO L226 Difference]: Without dead ends: 20181 [2022-11-03 03:54:41,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:54:41,412 INFO L413 NwaCegarLoop]: 2265 mSDtfsCounter, 2972 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 660 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3305 SdHoareTripleChecker+Valid, 3406 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:41,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3305 Valid, 3406 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 1626 Invalid, 3 Unknown, 0 Unchecked, 12.5s Time] [2022-11-03 03:54:41,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20181 states. [2022-11-03 03:54:42,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20181 to 20164. [2022-11-03 03:54:42,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20164 states, 13338 states have (on average 1.4040335882441146) internal successors, (18727), 13614 states have internal predecessors, (18727), 5374 states have call successors, (5374), 1448 states have call predecessors, (5374), 1451 states have return successors, (5440), 5341 states have call predecessors, (5440), 5372 states have call successors, (5440) [2022-11-03 03:54:42,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20164 states to 20164 states and 29541 transitions. [2022-11-03 03:54:42,586 INFO L78 Accepts]: Start accepts. Automaton has 20164 states and 29541 transitions. Word has length 755 [2022-11-03 03:54:42,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:42,586 INFO L495 AbstractCegarLoop]: Abstraction has 20164 states and 29541 transitions. [2022-11-03 03:54:42,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-11-03 03:54:42,587 INFO L276 IsEmpty]: Start isEmpty. Operand 20164 states and 29541 transitions. [2022-11-03 03:54:42,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2022-11-03 03:54:42,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:42,600 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 26, 26, 26, 26, 26, 26, 26, 26, 26, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:42,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:54:42,600 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:42,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:42,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1398843870, now seen corresponding path program 1 times [2022-11-03 03:54:42,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:42,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551067634] [2022-11-03 03:54:42,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:42,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 7005 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7001 trivial. 0 not checked. [2022-11-03 03:54:44,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:44,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551067634] [2022-11-03 03:54:44,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551067634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:44,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:44,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:54:44,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958904317] [2022-11-03 03:54:44,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:44,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:54:44,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:44,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:54:44,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:54:44,472 INFO L87 Difference]: Start difference. First operand 20164 states and 29541 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-11-03 03:54:46,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:53,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:55,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:56,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:59,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:01,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:01,489 INFO L93 Difference]: Finished difference Result 39793 states and 58349 transitions. [2022-11-03 03:55:01,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:55:01,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) Word has length 752 [2022-11-03 03:55:01,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:01,655 INFO L225 Difference]: With dead ends: 39793 [2022-11-03 03:55:01,656 INFO L226 Difference]: Without dead ends: 19765 [2022-11-03 03:55:01,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:55:01,697 INFO L413 NwaCegarLoop]: 2142 mSDtfsCounter, 3349 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 333 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3679 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 2703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:01,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3679 Valid, 3079 Invalid, 2703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 2367 Invalid, 3 Unknown, 0 Unchecked, 15.5s Time] [2022-11-03 03:55:01,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19765 states. [2022-11-03 03:55:03,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19765 to 19748. [2022-11-03 03:55:03,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19748 states, 13096 states have (on average 1.406459987782529) internal successors, (18419), 13364 states have internal predecessors, (18419), 5252 states have call successors, (5252), 1396 states have call predecessors, (5252), 1399 states have return successors, (5298), 5221 states have call predecessors, (5298), 5250 states have call successors, (5298) [2022-11-03 03:55:03,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19748 states to 19748 states and 28969 transitions. [2022-11-03 03:55:03,082 INFO L78 Accepts]: Start accepts. Automaton has 19748 states and 28969 transitions. Word has length 752 [2022-11-03 03:55:03,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:03,083 INFO L495 AbstractCegarLoop]: Abstraction has 19748 states and 28969 transitions. [2022-11-03 03:55:03,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-11-03 03:55:03,083 INFO L276 IsEmpty]: Start isEmpty. Operand 19748 states and 28969 transitions. [2022-11-03 03:55:03,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2022-11-03 03:55:03,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:03,124 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 44, 44, 44, 44, 44, 33, 33, 33, 33, 33, 33, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:55:03,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:55:03,124 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:03,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:03,125 INFO L85 PathProgramCache]: Analyzing trace with hash 504276244, now seen corresponding path program 1 times [2022-11-03 03:55:03,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:03,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111653594] [2022-11-03 03:55:03,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:03,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:09,309 INFO L134 CoverageAnalysis]: Checked inductivity of 13213 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 13192 trivial. 0 not checked. [2022-11-03 03:55:09,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:09,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111653594] [2022-11-03 03:55:09,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111653594] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:55:09,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136528478] [2022-11-03 03:55:09,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:09,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:55:09,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:55:09,313 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:55:09,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:55:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:12,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 10520 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:55:12,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:12,947 INFO L134 CoverageAnalysis]: Checked inductivity of 13213 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13205 trivial. 0 not checked. [2022-11-03 03:55:12,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:12,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136528478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:12,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:55:12,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-03 03:55:12,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412494095] [2022-11-03 03:55:12,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:12,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:55:12,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:12,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:55:12,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:55:12,952 INFO L87 Difference]: Start difference. First operand 19748 states and 28969 transitions. Second operand has 5 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (106), 2 states have call predecessors, (106), 3 states have return successors, (103), 3 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-03 03:55:15,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:22,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:24,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:26,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:28,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:30,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:32,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:34,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:34,729 INFO L93 Difference]: Finished difference Result 50456 states and 76082 transitions. [2022-11-03 03:55:34,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:55:34,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (106), 2 states have call predecessors, (106), 3 states have return successors, (103), 3 states have call predecessors, (103), 2 states have call successors, (103) Word has length 990 [2022-11-03 03:55:34,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:34,833 INFO L225 Difference]: With dead ends: 50456 [2022-11-03 03:55:34,834 INFO L226 Difference]: Without dead ends: 30844 [2022-11-03 03:55:34,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1007 GetRequests, 998 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:55:34,887 INFO L413 NwaCegarLoop]: 3730 mSDtfsCounter, 1065 mSDsluCounter, 11239 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 13857 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:34,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 13857 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1530 Invalid, 5 Unknown, 0 Unchecked, 19.7s Time] [2022-11-03 03:55:34,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30844 states. [2022-11-03 03:55:36,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30844 to 19512. [2022-11-03 03:55:36,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19512 states, 12980 states have (on average 1.4083975346687212) internal successors, (18281), 13244 states have internal predecessors, (18281), 5156 states have call successors, (5156), 1372 states have call predecessors, (5156), 1375 states have return successors, (5194), 5127 states have call predecessors, (5194), 5154 states have call successors, (5194) [2022-11-03 03:55:36,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19512 states to 19512 states and 28631 transitions. [2022-11-03 03:55:36,492 INFO L78 Accepts]: Start accepts. Automaton has 19512 states and 28631 transitions. Word has length 990 [2022-11-03 03:55:36,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:36,494 INFO L495 AbstractCegarLoop]: Abstraction has 19512 states and 28631 transitions. [2022-11-03 03:55:36,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (106), 2 states have call predecessors, (106), 3 states have return successors, (103), 3 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-03 03:55:36,494 INFO L276 IsEmpty]: Start isEmpty. Operand 19512 states and 28631 transitions. [2022-11-03 03:55:36,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1013 [2022-11-03 03:55:36,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:36,538 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 44, 44, 44, 44, 44, 33, 33, 33, 33, 33, 33, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:55:36,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:36,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-03 03:55:36,755 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:36,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:36,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1498754212, now seen corresponding path program 1 times [2022-11-03 03:55:36,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:36,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019259768] [2022-11-03 03:55:36,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:36,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 13213 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13205 trivial. 0 not checked. [2022-11-03 03:55:38,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:38,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019259768] [2022-11-03 03:55:38,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019259768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:38,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:38,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:55:38,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675411906] [2022-11-03 03:55:38,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:38,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:55:38,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:38,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:55:38,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:55:38,643 INFO L87 Difference]: Start difference. First operand 19512 states and 28631 transitions. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 2 states have call successors, (110), 2 states have call predecessors, (110), 3 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2022-11-03 03:55:40,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:45,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:47,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:50,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:51,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:51,164 INFO L93 Difference]: Finished difference Result 38936 states and 57188 transitions. [2022-11-03 03:55:51,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:55:51,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 2 states have call successors, (110), 2 states have call predecessors, (110), 3 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) Word has length 1012 [2022-11-03 03:55:51,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:51,230 INFO L225 Difference]: With dead ends: 38936 [2022-11-03 03:55:51,230 INFO L226 Difference]: Without dead ends: 19528 [2022-11-03 03:55:51,279 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 03:55:51,280 INFO L413 NwaCegarLoop]: 2454 mSDtfsCounter, 2 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4897 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:51,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4897 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 633 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2022-11-03 03:55:51,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19528 states. [2022-11-03 03:55:52,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19528 to 19512. [2022-11-03 03:55:52,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19512 states, 12980 states have (on average 1.4071648690292757) internal successors, (18265), 13244 states have internal predecessors, (18265), 5156 states have call successors, (5156), 1372 states have call predecessors, (5156), 1375 states have return successors, (5194), 5127 states have call predecessors, (5194), 5154 states have call successors, (5194) [2022-11-03 03:55:52,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19512 states to 19512 states and 28615 transitions. [2022-11-03 03:55:52,903 INFO L78 Accepts]: Start accepts. Automaton has 19512 states and 28615 transitions. Word has length 1012 [2022-11-03 03:55:52,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:52,904 INFO L495 AbstractCegarLoop]: Abstraction has 19512 states and 28615 transitions. [2022-11-03 03:55:52,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 2 states have call successors, (110), 2 states have call predecessors, (110), 3 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2022-11-03 03:55:52,904 INFO L276 IsEmpty]: Start isEmpty. Operand 19512 states and 28615 transitions. [2022-11-03 03:55:52,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1016 [2022-11-03 03:55:52,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:52,929 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 44, 44, 44, 44, 44, 33, 33, 33, 33, 33, 33, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:55:52,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 03:55:52,930 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:52,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:52,931 INFO L85 PathProgramCache]: Analyzing trace with hash 924064547, now seen corresponding path program 1 times [2022-11-03 03:55:52,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:52,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556330673] [2022-11-03 03:55:52,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:52,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:54,427 INFO L134 CoverageAnalysis]: Checked inductivity of 13213 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13205 trivial. 0 not checked. [2022-11-03 03:55:54,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:54,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556330673] [2022-11-03 03:55:54,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556330673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:54,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:54,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:55:54,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575257157] [2022-11-03 03:55:54,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:54,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:55:54,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:54,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:55:54,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:55:54,432 INFO L87 Difference]: Start difference. First operand 19512 states and 28615 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (110), 2 states have call predecessors, (110), 3 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2022-11-03 03:55:56,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:01,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:03,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:05,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:05,549 INFO L93 Difference]: Finished difference Result 38936 states and 57156 transitions. [2022-11-03 03:56:05,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:56:05,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (110), 2 states have call predecessors, (110), 3 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) Word has length 1015 [2022-11-03 03:56:05,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:05,597 INFO L225 Difference]: With dead ends: 38936 [2022-11-03 03:56:05,597 INFO L226 Difference]: Without dead ends: 19528 [2022-11-03 03:56:05,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:56:05,631 INFO L413 NwaCegarLoop]: 2449 mSDtfsCounter, 15 mSDsluCounter, 5491 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 7324 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:05,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 7324 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 950 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2022-11-03 03:56:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19528 states. [2022-11-03 03:56:07,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19528 to 19512. [2022-11-03 03:56:07,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19512 states, 12980 states have (on average 1.4059322033898305) internal successors, (18249), 13244 states have internal predecessors, (18249), 5156 states have call successors, (5156), 1372 states have call predecessors, (5156), 1375 states have return successors, (5194), 5127 states have call predecessors, (5194), 5154 states have call successors, (5194) [2022-11-03 03:56:07,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19512 states to 19512 states and 28599 transitions. [2022-11-03 03:56:07,145 INFO L78 Accepts]: Start accepts. Automaton has 19512 states and 28599 transitions. Word has length 1015 [2022-11-03 03:56:07,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:07,146 INFO L495 AbstractCegarLoop]: Abstraction has 19512 states and 28599 transitions. [2022-11-03 03:56:07,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (110), 2 states have call predecessors, (110), 3 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2022-11-03 03:56:07,147 INFO L276 IsEmpty]: Start isEmpty. Operand 19512 states and 28599 transitions. [2022-11-03 03:56:07,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1017 [2022-11-03 03:56:07,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:07,183 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 44, 44, 44, 44, 44, 33, 33, 33, 33, 33, 33, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:07,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 03:56:07,184 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:07,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:07,185 INFO L85 PathProgramCache]: Analyzing trace with hash -711267904, now seen corresponding path program 1 times [2022-11-03 03:56:07,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:07,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427230125] [2022-11-03 03:56:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:07,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 13213 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13205 trivial. 0 not checked. [2022-11-03 03:56:09,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:09,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427230125] [2022-11-03 03:56:09,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427230125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:09,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:09,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:56:09,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133721612] [2022-11-03 03:56:09,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:09,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:56:09,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:09,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:56:09,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:56:09,098 INFO L87 Difference]: Start difference. First operand 19512 states and 28599 transitions. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 2 states have call successors, (110), 2 states have call predecessors, (110), 3 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2022-11-03 03:56:11,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:17,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:19,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:21,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:22,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:24,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:24,429 INFO L93 Difference]: Finished difference Result 38936 states and 57124 transitions. [2022-11-03 03:56:24,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:56:24,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 2 states have call successors, (110), 2 states have call predecessors, (110), 3 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) Word has length 1016 [2022-11-03 03:56:24,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:24,497 INFO L225 Difference]: With dead ends: 38936 [2022-11-03 03:56:24,497 INFO L226 Difference]: Without dead ends: 19528 [2022-11-03 03:56:24,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:56:24,536 INFO L413 NwaCegarLoop]: 2448 mSDtfsCounter, 13 mSDsluCounter, 5495 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 7323 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:24,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 7323 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 953 Invalid, 3 Unknown, 0 Unchecked, 13.8s Time] [2022-11-03 03:56:24,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19528 states. [2022-11-03 03:56:25,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19528 to 19512. [2022-11-03 03:56:25,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19512 states, 12980 states have (on average 1.4046995377503853) internal successors, (18233), 13244 states have internal predecessors, (18233), 5156 states have call successors, (5156), 1372 states have call predecessors, (5156), 1375 states have return successors, (5194), 5127 states have call predecessors, (5194), 5154 states have call successors, (5194) [2022-11-03 03:56:25,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19512 states to 19512 states and 28583 transitions. [2022-11-03 03:56:25,875 INFO L78 Accepts]: Start accepts. Automaton has 19512 states and 28583 transitions. Word has length 1016 [2022-11-03 03:56:25,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:25,876 INFO L495 AbstractCegarLoop]: Abstraction has 19512 states and 28583 transitions. [2022-11-03 03:56:25,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 2 states have call successors, (110), 2 states have call predecessors, (110), 3 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2022-11-03 03:56:25,877 INFO L276 IsEmpty]: Start isEmpty. Operand 19512 states and 28583 transitions. [2022-11-03 03:56:25,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1018 [2022-11-03 03:56:25,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:25,901 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 44, 44, 44, 44, 44, 33, 33, 33, 33, 33, 33, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:25,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 03:56:25,901 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:25,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:25,902 INFO L85 PathProgramCache]: Analyzing trace with hash -27401250, now seen corresponding path program 1 times [2022-11-03 03:56:25,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:25,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688871587] [2022-11-03 03:56:25,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:25,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 13213 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 13192 trivial. 0 not checked. [2022-11-03 03:56:30,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:30,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688871587] [2022-11-03 03:56:30,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688871587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:56:30,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945647342] [2022-11-03 03:56:30,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:30,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:56:30,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:56:30,791 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:56:30,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:56:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:34,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 10710 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:56:34,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 13213 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 13174 trivial. 0 not checked. [2022-11-03 03:56:34,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:56:34,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945647342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:34,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:56:34,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-03 03:56:34,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475844750] [2022-11-03 03:56:34,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:34,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:56:34,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:34,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:56:34,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:56:34,572 INFO L87 Difference]: Start difference. First operand 19512 states and 28583 transitions. Second operand has 7 states, 6 states have (on average 34.333333333333336) internal successors, (206), 7 states have internal predecessors, (206), 5 states have call successors, (113), 2 states have call predecessors, (113), 5 states have return successors, (110), 6 states have call predecessors, (110), 5 states have call successors, (110) [2022-11-03 03:56:36,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:44,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:46,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:48,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:50,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:52,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:54,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:54,365 INFO L93 Difference]: Finished difference Result 29680 states and 43422 transitions. [2022-11-03 03:56:54,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:56:54,366 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 34.333333333333336) internal successors, (206), 7 states have internal predecessors, (206), 5 states have call successors, (113), 2 states have call predecessors, (113), 5 states have return successors, (110), 6 states have call predecessors, (110), 5 states have call successors, (110) Word has length 1017 [2022-11-03 03:56:54,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:54,437 INFO L225 Difference]: With dead ends: 29680 [2022-11-03 03:56:54,437 INFO L226 Difference]: Without dead ends: 19464 [2022-11-03 03:56:54,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 1023 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:56:54,478 INFO L413 NwaCegarLoop]: 2448 mSDtfsCounter, 8 mSDsluCounter, 13736 mSDsCounter, 0 mSdLazyCounter, 1914 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 14643 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1914 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:54,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 14643 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1914 Invalid, 5 Unknown, 0 Unchecked, 18.4s Time] [2022-11-03 03:56:54,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19464 states. [2022-11-03 03:56:55,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19464 to 19464. [2022-11-03 03:56:55,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19464 states, 12962 states have (on average 1.4049529393612097) internal successors, (18211), 13230 states have internal predecessors, (18211), 5132 states have call successors, (5132), 1358 states have call predecessors, (5132), 1369 states have return successors, (5174), 5107 states have call predecessors, (5174), 5130 states have call successors, (5174) [2022-11-03 03:56:55,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19464 states to 19464 states and 28517 transitions. [2022-11-03 03:56:55,998 INFO L78 Accepts]: Start accepts. Automaton has 19464 states and 28517 transitions. Word has length 1017 [2022-11-03 03:56:55,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:55,999 INFO L495 AbstractCegarLoop]: Abstraction has 19464 states and 28517 transitions. [2022-11-03 03:56:55,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 34.333333333333336) internal successors, (206), 7 states have internal predecessors, (206), 5 states have call successors, (113), 2 states have call predecessors, (113), 5 states have return successors, (110), 6 states have call predecessors, (110), 5 states have call successors, (110) [2022-11-03 03:56:55,999 INFO L276 IsEmpty]: Start isEmpty. Operand 19464 states and 28517 transitions. [2022-11-03 03:56:56,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2022-11-03 03:56:56,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:56,028 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 44, 44, 44, 44, 44, 33, 33, 33, 33, 33, 33, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:56,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:56,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 03:56:56,235 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:56,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:56,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1227217704, now seen corresponding path program 1 times [2022-11-03 03:56:56,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:56,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987387101] [2022-11-03 03:56:56,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:56,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:57,326 INFO L134 CoverageAnalysis]: Checked inductivity of 13213 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13199 trivial. 0 not checked. [2022-11-03 03:56:57,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:57,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987387101] [2022-11-03 03:56:57,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987387101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:57,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:57,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:56:57,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671691440] [2022-11-03 03:56:57,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:57,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:56:57,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:57,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:56:57,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:56:57,330 INFO L87 Difference]: Start difference. First operand 19464 states and 28517 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (101), 3 states have call predecessors, (101), 3 states have call successors, (101) [2022-11-03 03:56:59,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:03,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:05,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:10,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:57:10,774 INFO L93 Difference]: Finished difference Result 48208 states and 70193 transitions. [2022-11-03 03:57:10,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:57:10,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (101), 3 states have call predecessors, (101), 3 states have call successors, (101) Word has length 984 [2022-11-03 03:57:10,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:57:11,031 INFO L225 Difference]: With dead ends: 48208 [2022-11-03 03:57:11,032 INFO L226 Difference]: Without dead ends: 28720 [2022-11-03 03:57:11,076 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 03:57:11,077 INFO L413 NwaCegarLoop]: 3427 mSDtfsCounter, 1857 mSDsluCounter, 2429 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 24 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 5575 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:57:11,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1858 Valid, 5575 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 770 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2022-11-03 03:57:11,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28720 states. [2022-11-03 03:57:12,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28720 to 28712. [2022-11-03 03:57:12,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28712 states, 19214 states have (on average 1.3994483189341105) internal successors, (26889), 19578 states have internal predecessors, (26889), 7316 states have call successors, (7316), 2166 states have call predecessors, (7316), 2181 states have return successors, (7362), 7287 states have call predecessors, (7362), 7314 states have call successors, (7362) [2022-11-03 03:57:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28712 states to 28712 states and 41567 transitions. [2022-11-03 03:57:12,959 INFO L78 Accepts]: Start accepts. Automaton has 28712 states and 41567 transitions. Word has length 984 [2022-11-03 03:57:12,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:57:12,960 INFO L495 AbstractCegarLoop]: Abstraction has 28712 states and 41567 transitions. [2022-11-03 03:57:12,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (101), 3 states have call predecessors, (101), 3 states have call successors, (101) [2022-11-03 03:57:12,960 INFO L276 IsEmpty]: Start isEmpty. Operand 28712 states and 41567 transitions. [2022-11-03 03:57:13,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1002 [2022-11-03 03:57:13,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:57:13,001 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 44, 44, 44, 44, 44, 33, 33, 33, 33, 33, 33, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:57:13,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 03:57:13,002 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:57:13,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:57:13,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1937327923, now seen corresponding path program 1 times [2022-11-03 03:57:13,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:57:13,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734630437] [2022-11-03 03:57:13,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:57:13,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:57:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:57:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 13237 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 13213 trivial. 0 not checked. [2022-11-03 03:57:16,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:57:16,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734630437] [2022-11-03 03:57:16,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734630437] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:57:16,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691523920] [2022-11-03 03:57:16,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:57:16,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:57:16,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:57:16,243 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:57:16,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:57:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:57:19,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 10517 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:57:19,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:57:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 13237 backedges. 4696 proven. 0 refuted. 0 times theorem prover too weak. 8541 trivial. 0 not checked. [2022-11-03 03:57:19,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:57:19,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691523920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:57:19,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:57:19,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-03 03:57:19,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472474949] [2022-11-03 03:57:19,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:57:19,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:57:19,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:57:19,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:57:19,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:57:19,859 INFO L87 Difference]: Start difference. First operand 28712 states and 41567 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 2 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-03 03:57:21,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:25,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:29,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:32,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:57:32,031 INFO L93 Difference]: Finished difference Result 57372 states and 83061 transitions. [2022-11-03 03:57:32,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:57:32,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 2 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 1001 [2022-11-03 03:57:32,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:57:32,141 INFO L225 Difference]: With dead ends: 57372 [2022-11-03 03:57:32,142 INFO L226 Difference]: Without dead ends: 28748 [2022-11-03 03:57:32,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1009 GetRequests, 1002 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:57:32,214 INFO L413 NwaCegarLoop]: 2451 mSDtfsCounter, 14 mSDsluCounter, 5516 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 7350 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:57:32,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 7350 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 937 Invalid, 2 Unknown, 0 Unchecked, 10.3s Time] [2022-11-03 03:57:32,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28748 states. [2022-11-03 03:57:34,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28748 to 28431. [2022-11-03 03:57:34,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28431 states, 19037 states have (on average 1.4001155644271681) internal successors, (26654), 19385 states have internal predecessors, (26654), 7252 states have call successors, (7252), 2126 states have call predecessors, (7252), 2141 states have return successors, (7298), 7215 states have call predecessors, (7298), 7250 states have call successors, (7298) [2022-11-03 03:57:34,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28431 states to 28431 states and 41204 transitions. [2022-11-03 03:57:34,483 INFO L78 Accepts]: Start accepts. Automaton has 28431 states and 41204 transitions. Word has length 1001 [2022-11-03 03:57:34,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:57:34,484 INFO L495 AbstractCegarLoop]: Abstraction has 28431 states and 41204 transitions. [2022-11-03 03:57:34,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 2 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-03 03:57:34,484 INFO L276 IsEmpty]: Start isEmpty. Operand 28431 states and 41204 transitions. [2022-11-03 03:57:34,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1025 [2022-11-03 03:57:34,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:57:34,509 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 44, 44, 44, 44, 44, 33, 33, 33, 33, 33, 33, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:57:34,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:57:34,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:57:34,710 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:57:34,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:57:34,711 INFO L85 PathProgramCache]: Analyzing trace with hash -245830462, now seen corresponding path program 1 times [2022-11-03 03:57:34,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:57:34,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309710764] [2022-11-03 03:57:34,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:57:34,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:57:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:57:38,037 INFO L134 CoverageAnalysis]: Checked inductivity of 13237 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 13213 trivial. 0 not checked. [2022-11-03 03:57:38,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:57:38,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309710764] [2022-11-03 03:57:38,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309710764] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:57:38,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885068048] [2022-11-03 03:57:38,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:57:38,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:57:38,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:57:38,040 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:57:38,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:57:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:57:41,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 10654 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 03:57:41,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:57:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 13237 backedges. 4704 proven. 0 refuted. 0 times theorem prover too weak. 8533 trivial. 0 not checked. [2022-11-03 03:57:42,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:57:42,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885068048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:57:42,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:57:42,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2022-11-03 03:57:42,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417568405] [2022-11-03 03:57:42,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:57:42,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:57:42,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:57:42,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:57:42,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:57:42,783 INFO L87 Difference]: Start difference. First operand 28431 states and 41204 transitions. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 3 states have call successors, (111), 3 states have call predecessors, (111), 3 states have return successors, (108), 3 states have call predecessors, (108), 3 states have call successors, (108) [2022-11-03 03:57:44,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:49,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:52,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:53,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:01,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:58:01,563 INFO L93 Difference]: Finished difference Result 66124 states and 96513 transitions. [2022-11-03 03:58:01,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:58:01,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 3 states have call successors, (111), 3 states have call predecessors, (111), 3 states have return successors, (108), 3 states have call predecessors, (108), 3 states have call successors, (108) Word has length 1024 [2022-11-03 03:58:01,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:58:01,684 INFO L225 Difference]: With dead ends: 66124 [2022-11-03 03:58:01,685 INFO L226 Difference]: Without dead ends: 37709 [2022-11-03 03:58:01,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1031 GetRequests, 1026 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:58:01,751 INFO L413 NwaCegarLoop]: 4070 mSDtfsCounter, 2402 mSDsluCounter, 5601 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 49 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2547 SdHoareTripleChecker+Valid, 8942 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:58:01,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2547 Valid, 8942 Invalid, 2360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2309 Invalid, 2 Unknown, 0 Unchecked, 15.6s Time] [2022-11-03 03:58:01,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37709 states. [2022-11-03 03:58:04,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37709 to 33591. [2022-11-03 03:58:04,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33591 states, 22689 states have (on average 1.406672837057605) internal successors, (31916), 23093 states have internal predecessors, (31916), 8372 states have call successors, (8372), 2514 states have call predecessors, (8372), 2529 states have return successors, (8418), 8331 states have call predecessors, (8418), 8370 states have call successors, (8418) [2022-11-03 03:58:04,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33591 states to 33591 states and 48706 transitions. [2022-11-03 03:58:04,270 INFO L78 Accepts]: Start accepts. Automaton has 33591 states and 48706 transitions. Word has length 1024 [2022-11-03 03:58:04,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:58:04,271 INFO L495 AbstractCegarLoop]: Abstraction has 33591 states and 48706 transitions. [2022-11-03 03:58:04,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 3 states have call successors, (111), 3 states have call predecessors, (111), 3 states have return successors, (108), 3 states have call predecessors, (108), 3 states have call successors, (108) [2022-11-03 03:58:04,271 INFO L276 IsEmpty]: Start isEmpty. Operand 33591 states and 48706 transitions. [2022-11-03 03:58:04,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2022-11-03 03:58:04,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:58:04,300 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 44, 44, 44, 44, 44, 33, 33, 33, 33, 33, 33, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:58:04,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:58:04,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:58:04,501 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:58:04,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:58:04,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1411011214, now seen corresponding path program 1 times [2022-11-03 03:58:04,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:58:04,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721540660] [2022-11-03 03:58:04,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:04,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:58:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:58:06,105 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 13264 trivial. 0 not checked. [2022-11-03 03:58:06,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:58:06,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721540660] [2022-11-03 03:58:06,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721540660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:58:06,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:58:06,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:58:06,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627785469] [2022-11-03 03:58:06,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:58:06,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:58:06,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:58:06,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:58:06,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:58:06,109 INFO L87 Difference]: Start difference. First operand 33591 states and 48706 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 3 states have call successors, (123), 2 states have call predecessors, (123), 1 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2022-11-03 03:58:08,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:10,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:14,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:58:14,549 INFO L93 Difference]: Finished difference Result 66881 states and 96902 transitions. [2022-11-03 03:58:14,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:58:14,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 3 states have call successors, (123), 2 states have call predecessors, (123), 1 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) Word has length 1084 [2022-11-03 03:58:14,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:58:14,784 INFO L225 Difference]: With dead ends: 66881 [2022-11-03 03:58:14,784 INFO L226 Difference]: Without dead ends: 32318 [2022-11-03 03:58:14,861 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 03:58:14,862 INFO L413 NwaCegarLoop]: 3113 mSDtfsCounter, 2427 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2427 SdHoareTripleChecker+Valid, 3985 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:58:14,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2427 Valid, 3985 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 486 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-03 03:58:14,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32318 states. [2022-11-03 03:58:17,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32318 to 32271. [2022-11-03 03:58:17,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32271 states, 21831 states have (on average 1.404424900371032) internal successors, (30660), 22192 states have internal predecessors, (30660), 7977 states have call successors, (7977), 2447 states have call predecessors, (7977), 2462 states have return successors, (8023), 7963 states have call predecessors, (8023), 7975 states have call successors, (8023) [2022-11-03 03:58:18,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32271 states to 32271 states and 46660 transitions. [2022-11-03 03:58:18,186 INFO L78 Accepts]: Start accepts. Automaton has 32271 states and 46660 transitions. Word has length 1084 [2022-11-03 03:58:18,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:58:18,187 INFO L495 AbstractCegarLoop]: Abstraction has 32271 states and 46660 transitions. [2022-11-03 03:58:18,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 3 states have call successors, (123), 2 states have call predecessors, (123), 1 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2022-11-03 03:58:18,188 INFO L276 IsEmpty]: Start isEmpty. Operand 32271 states and 46660 transitions. [2022-11-03 03:58:18,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1090 [2022-11-03 03:58:18,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:58:18,219 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 44, 44, 44, 44, 44, 33, 33, 33, 33, 33, 33, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:58:18,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 03:58:18,219 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:58:18,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:58:18,220 INFO L85 PathProgramCache]: Analyzing trace with hash 950857215, now seen corresponding path program 1 times [2022-11-03 03:58:18,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:58:18,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128807438] [2022-11-03 03:58:18,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:18,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:58:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:58:21,855 INFO L134 CoverageAnalysis]: Checked inductivity of 13280 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 13266 trivial. 0 not checked. [2022-11-03 03:58:21,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:58:21,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128807438] [2022-11-03 03:58:21,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128807438] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:58:21,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262835603] [2022-11-03 03:58:21,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:21,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:58:21,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:58:21,857 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:58:21,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:58:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:58:25,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 10873 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:58:25,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:58:26,107 INFO L134 CoverageAnalysis]: Checked inductivity of 13280 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 13212 trivial. 0 not checked. [2022-11-03 03:58:26,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:58:26,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262835603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:58:26,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:58:26,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-03 03:58:26,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872069935] [2022-11-03 03:58:26,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:58:26,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:58:26,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:58:26,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:58:26,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:58:26,112 INFO L87 Difference]: Start difference. First operand 32271 states and 46660 transitions. Second operand has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (126), 2 states have call predecessors, (126), 3 states have return successors, (125), 3 states have call predecessors, (125), 2 states have call successors, (125) [2022-11-03 03:58:28,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:31,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:32,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:34,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:36,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:39,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:41,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:43,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:50,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:58:50,401 INFO L93 Difference]: Finished difference Result 64062 states and 92646 transitions. [2022-11-03 03:58:50,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:58:50,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (126), 2 states have call predecessors, (126), 3 states have return successors, (125), 3 states have call predecessors, (125), 2 states have call successors, (125) Word has length 1089 [2022-11-03 03:58:50,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:58:50,489 INFO L225 Difference]: With dead ends: 64062 [2022-11-03 03:58:50,489 INFO L226 Difference]: Without dead ends: 32495 [2022-11-03 03:58:50,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1095 GetRequests, 1087 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:58:50,539 INFO L413 NwaCegarLoop]: 2453 mSDtfsCounter, 6 mSDsluCounter, 8280 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 9802 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:58:50,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 9802 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1257 Invalid, 6 Unknown, 0 Unchecked, 21.4s Time] [2022-11-03 03:58:50,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32495 states. [2022-11-03 03:58:52,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32495 to 32335. [2022-11-03 03:58:52,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32335 states, 21879 states have (on average 1.4035376388317564) internal successors, (30708), 22240 states have internal predecessors, (30708), 7977 states have call successors, (7977), 2447 states have call predecessors, (7977), 2478 states have return successors, (8055), 7979 states have call predecessors, (8055), 7975 states have call successors, (8055) [2022-11-03 03:58:53,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32335 states to 32335 states and 46740 transitions. [2022-11-03 03:58:53,065 INFO L78 Accepts]: Start accepts. Automaton has 32335 states and 46740 transitions. Word has length 1089 [2022-11-03 03:58:53,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:58:53,067 INFO L495 AbstractCegarLoop]: Abstraction has 32335 states and 46740 transitions. [2022-11-03 03:58:53,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (126), 2 states have call predecessors, (126), 3 states have return successors, (125), 3 states have call predecessors, (125), 2 states have call successors, (125) [2022-11-03 03:58:53,068 INFO L276 IsEmpty]: Start isEmpty. Operand 32335 states and 46740 transitions. [2022-11-03 03:58:53,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1079 [2022-11-03 03:58:53,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:58:53,286 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 44, 44, 44, 44, 44, 33, 33, 33, 33, 33, 33, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:58:53,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:58:53,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:58:53,499 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:58:53,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:58:53,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1658035116, now seen corresponding path program 1 times [2022-11-03 03:58:53,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:58:53,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771204017] [2022-11-03 03:58:53,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:53,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:58:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:58:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 13249 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 13218 trivial. 0 not checked. [2022-11-03 03:58:58,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:58:58,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771204017] [2022-11-03 03:58:58,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771204017] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:58:58,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360211608] [2022-11-03 03:58:58,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:58,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:58:58,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:58:58,470 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:58:58,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6612d2c0-5b84-40e9-8937-7987279c1371/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 03:59:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:02,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 10999 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-03 03:59:02,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:59:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 13249 backedges. 4711 proven. 16 refuted. 0 times theorem prover too weak. 8522 trivial. 0 not checked. [2022-11-03 03:59:06,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:59:08,290 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 14299 disjunctions. This might take some time...