./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS --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 8f21bcf4203715ff2cf8f1fa847025b0ca29b6eb32fc30a64baf7cbf3cb00ebc --- 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-8393723 [2022-11-19 07:03:41,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:03:41,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:03:41,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:03:41,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:03:41,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:03:41,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:03:41,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:03:41,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:03:41,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:03:41,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:03:41,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:03:41,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:03:41,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:03:41,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:03:41,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:03:41,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:03:41,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:03:41,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:03:41,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:03:41,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:03:41,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:03:41,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:03:41,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:03:41,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:03:41,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:03:41,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:03:41,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:03:41,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:03:41,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:03:41,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:03:41,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:03:41,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:03:41,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:03:41,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:03:41,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:03:41,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:03:41,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:03:41,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:03:41,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:03:41,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:03:41,317 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:03:41,339 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:03:41,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:03:41,340 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:03:41,340 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:03:41,341 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:03:41,341 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:03:41,341 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:03:41,342 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:03:41,342 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:03:41,342 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:03:41,343 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:03:41,343 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:03:41,343 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:03:41,344 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:03:41,344 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:03:41,344 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:03:41,345 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:03:41,345 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:03:41,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:03:41,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:03:41,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:03:41,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:03:41,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:03:41,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:03:41,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:03:41,348 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:03:41,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:03:41,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:03:41,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:03:41,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:03:41,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:03:41,350 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:03:41,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:03:41,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:03:41,350 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:03:41,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:03:41,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:03:41,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:03:41,351 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_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f21bcf4203715ff2cf8f1fa847025b0ca29b6eb32fc30a64baf7cbf3cb00ebc [2022-11-19 07:03:41,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:03:41,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:03:41,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:03:41,692 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:03:41,693 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:03:41,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-19 07:03:41,793 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/data/d9d3b6f33/4e2e7f21c9f1457c8ca7732b5a146b09/FLAGe1aa0b548 [2022-11-19 07:03:42,664 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:03:42,664 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-19 07:03:42,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/data/d9d3b6f33/4e2e7f21c9f1457c8ca7732b5a146b09/FLAGe1aa0b548 [2022-11-19 07:03:43,210 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/data/d9d3b6f33/4e2e7f21c9f1457c8ca7732b5a146b09 [2022-11-19 07:03:43,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:03:43,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:03:43,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:03:43,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:03:43,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:03:43,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:03:43" (1/1) ... [2022-11-19 07:03:43,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e09197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:43, skipping insertion in model container [2022-11-19 07:03:43,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:03:43" (1/1) ... [2022-11-19 07:03:43,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:03:43,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:03:44,420 WARN L234 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_41a8e49b-367f-4eae-b7cf-315f4d8054e8/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2022-11-19 07:03:44,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:03:44,502 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:03:44,864 WARN L234 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_41a8e49b-367f-4eae-b7cf-315f4d8054e8/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2022-11-19 07:03:44,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:03:45,004 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:03:45,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45 WrapperNode [2022-11-19 07:03:45,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:03:45,006 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:03:45,006 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:03:45,006 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:03:45,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,172 INFO L138 Inliner]: procedures = 153, calls = 606, calls flagged for inlining = 71, calls inlined = 71, statements flattened = 1845 [2022-11-19 07:03:45,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:03:45,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:03:45,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:03:45,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:03:45,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,272 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:03:45,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:03:45,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:03:45,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:03:45,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:03:45,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:03:45,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:03:45,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:03:45,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_11 [2022-11-19 07:03:45,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_11 [2022-11-19 07:03:45,399 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 07:03:45,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 07:03:45,399 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_ioctl [2022-11-19 07:03:45,400 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_ioctl [2022-11-19 07:03:45,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:03:45,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2022-11-19 07:03:45,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2022-11-19 07:03:45,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2022-11-19 07:03:45,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2022-11-19 07:03:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_close [2022-11-19 07:03:45,401 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_close [2022-11-19 07:03:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:03:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:03:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:03:45,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:03:45,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:03:45,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:03:45,404 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:03:45,404 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-11-19 07:03:45,404 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-11-19 07:03:45,404 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 07:03:45,404 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 07:03:45,405 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-19 07:03:45,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-19 07:03:45,405 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-19 07:03:45,405 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-19 07:03:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2022-11-19 07:03:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2022-11-19 07:03:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:03:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:03:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 07:03:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 07:03:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-19 07:03:45,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-19 07:03:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:03:45,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:03:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-19 07:03:45,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-19 07:03:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-19 07:03:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_disconnect [2022-11-19 07:03:45,408 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_disconnect [2022-11-19 07:03:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_set_mtu [2022-11-19 07:03:45,408 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_set_mtu [2022-11-19 07:03:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2022-11-19 07:03:45,409 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2022-11-19 07:03:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:03:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:03:45,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:03:45,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:03:45,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:03:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure rx_submit [2022-11-19 07:03:45,413 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_submit [2022-11-19 07:03:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 07:03:45,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 07:03:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:03:45,414 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:03:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 07:03:45,414 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 07:03:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:03:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 07:03:45,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 07:03:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 07:03:45,415 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 07:03:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:03:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 07:03:45,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 07:03:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:03:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:03:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 07:03:45,417 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:03:45,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:03:45,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:03:45,417 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2022-11-19 07:03:45,417 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2022-11-19 07:03:45,417 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-19 07:03:45,418 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-19 07:03:45,418 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 07:03:45,418 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 07:03:45,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:03:45,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:03:45,419 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-19 07:03:45,419 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-19 07:03:45,419 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-19 07:03:45,419 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-19 07:03:45,420 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 07:03:45,420 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 07:03:45,421 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 07:03:45,421 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 07:03:45,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-19 07:03:45,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-19 07:03:45,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:03:45,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:03:45,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:03:45,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:03:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure rx_complete [2022-11-19 07:03:45,423 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_complete [2022-11-19 07:03:46,016 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:03:46,019 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:03:47,228 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:03:49,398 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:03:49,988 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:03:49,989 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:03:49,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:03:49 BoogieIcfgContainer [2022-11-19 07:03:49,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:03:49,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:03:50,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:03:50,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:03:50,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:03:43" (1/3) ... [2022-11-19 07:03:50,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fca41c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:03:50, skipping insertion in model container [2022-11-19 07:03:50,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (2/3) ... [2022-11-19 07:03:50,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fca41c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:03:50, skipping insertion in model container [2022-11-19 07:03:50,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:03:49" (3/3) ... [2022-11-19 07:03:50,006 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-19 07:03:50,027 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:03:50,027 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:03:50,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:03:50,133 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;@6e70470, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:03:50,134 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:03:50,145 INFO L276 IsEmpty]: Start isEmpty. Operand has 406 states, 252 states have (on average 1.3611111111111112) internal successors, (343), 271 states have internal predecessors, (343), 113 states have call successors, (113), 40 states have call predecessors, (113), 39 states have return successors, (107), 105 states have call predecessors, (107), 107 states have call successors, (107) [2022-11-19 07:03:50,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-19 07:03:50,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:50,157 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:03:50,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:03:50,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:50,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1235133917, now seen corresponding path program 1 times [2022-11-19 07:03:50,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:50,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155200969] [2022-11-19 07:03:50,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:50,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-19 07:03:50,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:50,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155200969] [2022-11-19 07:03:50,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155200969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:50,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:03:50,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:03:50,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911670796] [2022-11-19 07:03:50,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:50,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:03:50,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:50,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:03:50,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:03:50,899 INFO L87 Difference]: Start difference. First operand has 406 states, 252 states have (on average 1.3611111111111112) internal successors, (343), 271 states have internal predecessors, (343), 113 states have call successors, (113), 40 states have call predecessors, (113), 39 states have return successors, (107), 105 states have call predecessors, (107), 107 states have call successors, (107) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-19 07:03:54,355 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 [] [2022-11-19 07:03:54,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:54,604 INFO L93 Difference]: Finished difference Result 1170 states and 1622 transitions. [2022-11-19 07:03:54,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:03:54,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 57 [2022-11-19 07:03:54,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:54,625 INFO L225 Difference]: With dead ends: 1170 [2022-11-19 07:03:54,625 INFO L226 Difference]: Without dead ends: 760 [2022-11-19 07:03:54,631 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 [2022-11-19 07:03:54,634 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 509 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:54,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 1034 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-19 07:03:54,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-19 07:03:54,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2022-11-19 07:03:54,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 481 states have (on average 1.3222453222453223) internal successors, (636), 499 states have internal predecessors, (636), 203 states have call successors, (203), 76 states have call predecessors, (203), 75 states have return successors, (198), 194 states have call predecessors, (198), 198 states have call successors, (198) [2022-11-19 07:03:54,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1037 transitions. [2022-11-19 07:03:54,750 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1037 transitions. Word has length 57 [2022-11-19 07:03:54,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:54,753 INFO L495 AbstractCegarLoop]: Abstraction has 760 states and 1037 transitions. [2022-11-19 07:03:54,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-19 07:03:54,754 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1037 transitions. [2022-11-19 07:03:54,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-19 07:03:54,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:54,758 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:03:54,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:03:54,759 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:03:54,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:54,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1016806594, now seen corresponding path program 1 times [2022-11-19 07:03:54,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:54,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343908002] [2022-11-19 07:03:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:54,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:55,459 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-19 07:03:55,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:55,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343908002] [2022-11-19 07:03:55,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343908002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:55,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:03:55,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:03:55,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561285046] [2022-11-19 07:03:55,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:55,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:03:55,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:55,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:03:55,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:03:55,468 INFO L87 Difference]: Start difference. First operand 760 states and 1037 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:03:57,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:57,815 INFO L93 Difference]: Finished difference Result 1178 states and 1598 transitions. [2022-11-19 07:03:57,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:03:57,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-11-19 07:03:57,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:57,826 INFO L225 Difference]: With dead ends: 1178 [2022-11-19 07:03:57,826 INFO L226 Difference]: Without dead ends: 1175 [2022-11-19 07:03:57,832 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 [2022-11-19 07:03:57,836 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 283 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:57,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 940 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-19 07:03:57,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2022-11-19 07:03:57,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1163. [2022-11-19 07:03:57,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 747 states have (on average 1.3306559571619812) internal successors, (994), 771 states have internal predecessors, (994), 296 states have call successors, (296), 122 states have call predecessors, (296), 119 states have return successors, (291), 281 states have call predecessors, (291), 291 states have call successors, (291) [2022-11-19 07:03:57,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1581 transitions. [2022-11-19 07:03:57,950 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1581 transitions. Word has length 71 [2022-11-19 07:03:57,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:57,951 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 1581 transitions. [2022-11-19 07:03:57,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:03:57,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1581 transitions. [2022-11-19 07:03:57,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-19 07:03:57,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:57,963 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:03:57,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:03:57,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:03:57,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:57,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1456002114, now seen corresponding path program 1 times [2022-11-19 07:03:57,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:57,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968563572] [2022-11-19 07:03:57,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:57,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:58,507 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-19 07:03:58,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:58,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968563572] [2022-11-19 07:03:58,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968563572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:58,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:03:58,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:03:58,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245576911] [2022-11-19 07:03:58,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:58,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:03:58,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:58,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:03:58,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:03:58,510 INFO L87 Difference]: Start difference. First operand 1163 states and 1581 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:03:59,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:59,684 INFO L93 Difference]: Finished difference Result 1165 states and 1582 transitions. [2022-11-19 07:03:59,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:03:59,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2022-11-19 07:03:59,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:59,692 INFO L225 Difference]: With dead ends: 1165 [2022-11-19 07:03:59,692 INFO L226 Difference]: Without dead ends: 1162 [2022-11-19 07:03:59,693 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 [2022-11-19 07:03:59,694 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 515 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:59,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 453 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 07:03:59,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-11-19 07:03:59,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1162. [2022-11-19 07:03:59,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 747 states have (on average 1.3293172690763053) internal successors, (993), 770 states have internal predecessors, (993), 295 states have call successors, (295), 122 states have call predecessors, (295), 119 states have return successors, (291), 281 states have call predecessors, (291), 291 states have call successors, (291) [2022-11-19 07:03:59,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1579 transitions. [2022-11-19 07:03:59,779 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1579 transitions. Word has length 72 [2022-11-19 07:03:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:59,780 INFO L495 AbstractCegarLoop]: Abstraction has 1162 states and 1579 transitions. [2022-11-19 07:03:59,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:03:59,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1579 transitions. [2022-11-19 07:03:59,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-19 07:03:59,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:59,782 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:03:59,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:03:59,783 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:03:59,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:59,783 INFO L85 PathProgramCache]: Analyzing trace with hash -2108801083, now seen corresponding path program 1 times [2022-11-19 07:03:59,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:59,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711828190] [2022-11-19 07:03:59,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:59,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:00,018 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-19 07:04:00,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:00,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711828190] [2022-11-19 07:04:00,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711828190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:00,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:00,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:04:00,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979332388] [2022-11-19 07:04:00,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:00,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:04:00,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:00,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:04:00,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:00,023 INFO L87 Difference]: Start difference. First operand 1162 states and 1579 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:04:01,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:01,294 INFO L93 Difference]: Finished difference Result 1164 states and 1580 transitions. [2022-11-19 07:04:01,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:04:01,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2022-11-19 07:04:01,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:01,302 INFO L225 Difference]: With dead ends: 1164 [2022-11-19 07:04:01,302 INFO L226 Difference]: Without dead ends: 1161 [2022-11-19 07:04:01,303 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 [2022-11-19 07:04:01,308 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 512 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:01,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 451 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-19 07:04:01,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2022-11-19 07:04:01,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1161. [2022-11-19 07:04:01,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 747 states have (on average 1.3279785809906293) internal successors, (992), 769 states have internal predecessors, (992), 294 states have call successors, (294), 122 states have call predecessors, (294), 119 states have return successors, (291), 281 states have call predecessors, (291), 291 states have call successors, (291) [2022-11-19 07:04:01,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1577 transitions. [2022-11-19 07:04:01,411 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1577 transitions. Word has length 73 [2022-11-19 07:04:01,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:01,413 INFO L495 AbstractCegarLoop]: Abstraction has 1161 states and 1577 transitions. [2022-11-19 07:04:01,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:04:01,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1577 transitions. [2022-11-19 07:04:01,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-19 07:04:01,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:01,415 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:04:01,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:04:01,416 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:01,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:01,416 INFO L85 PathProgramCache]: Analyzing trace with hash -948545627, now seen corresponding path program 1 times [2022-11-19 07:04:01,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:01,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253232499] [2022-11-19 07:04:01,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:01,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-19 07:04:01,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:01,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253232499] [2022-11-19 07:04:01,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253232499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:01,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:01,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:04:01,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634062966] [2022-11-19 07:04:01,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:01,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:04:01,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:01,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:04:01,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:01,593 INFO L87 Difference]: Start difference. First operand 1161 states and 1577 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:04:03,198 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 [] [2022-11-19 07:04:03,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:03,393 INFO L93 Difference]: Finished difference Result 1163 states and 1578 transitions. [2022-11-19 07:04:03,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:04:03,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-11-19 07:04:03,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:03,401 INFO L225 Difference]: With dead ends: 1163 [2022-11-19 07:04:03,401 INFO L226 Difference]: Without dead ends: 1160 [2022-11-19 07:04:03,402 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 [2022-11-19 07:04:03,403 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 509 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:03,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 449 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-19 07:04:03,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-11-19 07:04:03,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1160. [2022-11-19 07:04:03,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 747 states have (on average 1.3266398929049532) internal successors, (991), 768 states have internal predecessors, (991), 293 states have call successors, (293), 122 states have call predecessors, (293), 119 states have return successors, (291), 281 states have call predecessors, (291), 291 states have call successors, (291) [2022-11-19 07:04:03,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1575 transitions. [2022-11-19 07:04:03,529 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1575 transitions. Word has length 74 [2022-11-19 07:04:03,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:03,532 INFO L495 AbstractCegarLoop]: Abstraction has 1160 states and 1575 transitions. [2022-11-19 07:04:03,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:04:03,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1575 transitions. [2022-11-19 07:04:03,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-19 07:04:03,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:03,535 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:04:03,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:04:03,537 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:03,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:03,538 INFO L85 PathProgramCache]: Analyzing trace with hash 659640008, now seen corresponding path program 1 times [2022-11-19 07:04:03,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:03,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24244041] [2022-11-19 07:04:03,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:03,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-19 07:04:03,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:03,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24244041] [2022-11-19 07:04:03,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24244041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:03,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:03,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:04:03,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787958136] [2022-11-19 07:04:03,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:03,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:04:03,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:03,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:04:03,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:03,772 INFO L87 Difference]: Start difference. First operand 1160 states and 1575 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:04:06,200 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 [] [2022-11-19 07:04:06,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:06,399 INFO L93 Difference]: Finished difference Result 1162 states and 1576 transitions. [2022-11-19 07:04:06,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:04:06,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-11-19 07:04:06,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:06,407 INFO L225 Difference]: With dead ends: 1162 [2022-11-19 07:04:06,407 INFO L226 Difference]: Without dead ends: 1153 [2022-11-19 07:04:06,408 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 [2022-11-19 07:04:06,409 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 506 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:06,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 448 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-19 07:04:06,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2022-11-19 07:04:06,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1153. [2022-11-19 07:04:06,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 741 states have (on average 1.3252361673414306) internal successors, (982), 761 states have internal predecessors, (982), 292 states have call successors, (292), 122 states have call predecessors, (292), 119 states have return successors, (291), 281 states have call predecessors, (291), 291 states have call successors, (291) [2022-11-19 07:04:06,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1565 transitions. [2022-11-19 07:04:06,509 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1565 transitions. Word has length 75 [2022-11-19 07:04:06,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:06,509 INFO L495 AbstractCegarLoop]: Abstraction has 1153 states and 1565 transitions. [2022-11-19 07:04:06,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:04:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1565 transitions. [2022-11-19 07:04:06,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-19 07:04:06,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:06,513 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:04:06,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:04:06,514 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:06,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:06,514 INFO L85 PathProgramCache]: Analyzing trace with hash -841426181, now seen corresponding path program 1 times [2022-11-19 07:04:06,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:06,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062504261] [2022-11-19 07:04:06,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:06,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:06,712 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-19 07:04:06,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:06,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062504261] [2022-11-19 07:04:06,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062504261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:06,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:06,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:04:06,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952495273] [2022-11-19 07:04:06,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:06,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:04:06,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:06,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:04:06,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:06,716 INFO L87 Difference]: Start difference. First operand 1153 states and 1565 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:04:10,238 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 [] [2022-11-19 07:04:10,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:10,725 INFO L93 Difference]: Finished difference Result 3133 states and 4243 transitions. [2022-11-19 07:04:10,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:04:10,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2022-11-19 07:04:10,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:10,738 INFO L225 Difference]: With dead ends: 3133 [2022-11-19 07:04:10,738 INFO L226 Difference]: Without dead ends: 1994 [2022-11-19 07:04:10,743 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 [2022-11-19 07:04:10,744 INFO L413 NwaCegarLoop]: 708 mSDtfsCounter, 441 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:10,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1111 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 236 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-11-19 07:04:10,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2022-11-19 07:04:10,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1943. [2022-11-19 07:04:10,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1243 states have (on average 1.3193885760257442) internal successors, (1640), 1293 states have internal predecessors, (1640), 490 states have call successors, (490), 212 states have call predecessors, (490), 209 states have return successors, (511), 457 states have call predecessors, (511), 489 states have call successors, (511) [2022-11-19 07:04:10,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 2641 transitions. [2022-11-19 07:04:10,918 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 2641 transitions. Word has length 104 [2022-11-19 07:04:10,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:10,919 INFO L495 AbstractCegarLoop]: Abstraction has 1943 states and 2641 transitions. [2022-11-19 07:04:10,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:04:10,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 2641 transitions. [2022-11-19 07:04:10,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-19 07:04:10,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:10,928 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 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] [2022-11-19 07:04:10,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:04:10,929 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:10,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:10,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1506759519, now seen corresponding path program 1 times [2022-11-19 07:04:10,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:10,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866254226] [2022-11-19 07:04:10,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:10,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:11,229 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-19 07:04:11,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:11,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866254226] [2022-11-19 07:04:11,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866254226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:11,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:11,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:04:11,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051821295] [2022-11-19 07:04:11,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:11,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:04:11,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:11,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:04:11,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:11,232 INFO L87 Difference]: Start difference. First operand 1943 states and 2641 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-19 07:04:13,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:13,243 INFO L93 Difference]: Finished difference Result 3620 states and 4906 transitions. [2022-11-19 07:04:13,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:04:13,244 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), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 192 [2022-11-19 07:04:13,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:13,253 INFO L225 Difference]: With dead ends: 3620 [2022-11-19 07:04:13,253 INFO L226 Difference]: Without dead ends: 1699 [2022-11-19 07:04:13,259 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 [2022-11-19 07:04:13,259 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 418 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:13,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1031 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-19 07:04:13,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2022-11-19 07:04:13,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1691. [2022-11-19 07:04:13,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1084 states have (on average 1.320110701107011) internal successors, (1431), 1127 states have internal predecessors, (1431), 415 states have call successors, (415), 194 states have call predecessors, (415), 191 states have return successors, (434), 387 states have call predecessors, (434), 414 states have call successors, (434) [2022-11-19 07:04:13,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2280 transitions. [2022-11-19 07:04:13,399 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2280 transitions. Word has length 192 [2022-11-19 07:04:13,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:13,399 INFO L495 AbstractCegarLoop]: Abstraction has 1691 states and 2280 transitions. [2022-11-19 07:04:13,399 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), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-19 07:04:13,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2280 transitions. [2022-11-19 07:04:13,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-19 07:04:13,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:13,408 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 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] [2022-11-19 07:04:13,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:04:13,409 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:13,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:13,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1817007505, now seen corresponding path program 1 times [2022-11-19 07:04:13,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:13,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834259999] [2022-11-19 07:04:13,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:13,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:13,725 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-19 07:04:13,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:13,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834259999] [2022-11-19 07:04:13,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834259999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:13,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:13,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:04:13,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488516906] [2022-11-19 07:04:13,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:13,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:04:13,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:13,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:04:13,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:13,731 INFO L87 Difference]: Start difference. First operand 1691 states and 2280 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-19 07:04:16,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:17,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:17,183 INFO L93 Difference]: Finished difference Result 3798 states and 5259 transitions. [2022-11-19 07:04:17,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:04:17,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 198 [2022-11-19 07:04:17,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:17,195 INFO L225 Difference]: With dead ends: 3798 [2022-11-19 07:04:17,195 INFO L226 Difference]: Without dead ends: 2146 [2022-11-19 07:04:17,201 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 [2022-11-19 07:04:17,202 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 116 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:17,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1022 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-19 07:04:17,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2022-11-19 07:04:17,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 1699. [2022-11-19 07:04:17,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1092 states have (on average 1.3214285714285714) internal successors, (1443), 1135 states have internal predecessors, (1443), 415 states have call successors, (415), 194 states have call predecessors, (415), 191 states have return successors, (434), 387 states have call predecessors, (434), 414 states have call successors, (434) [2022-11-19 07:04:17,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2292 transitions. [2022-11-19 07:04:17,383 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2292 transitions. Word has length 198 [2022-11-19 07:04:17,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:17,384 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 2292 transitions. [2022-11-19 07:04:17,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-19 07:04:17,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2292 transitions. [2022-11-19 07:04:17,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-19 07:04:17,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:17,388 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 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] [2022-11-19 07:04:17,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:04:17,389 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:17,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:17,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1955263452, now seen corresponding path program 1 times [2022-11-19 07:04:17,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:17,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242343935] [2022-11-19 07:04:17,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:17,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:17,764 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-19 07:04:17,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:17,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242343935] [2022-11-19 07:04:17,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242343935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:17,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:17,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:04:17,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972372444] [2022-11-19 07:04:17,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:17,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:04:17,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:17,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:04:17,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:17,767 INFO L87 Difference]: Start difference. First operand 1699 states and 2292 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-19 07:04:20,621 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 [] [2022-11-19 07:04:20,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:20,948 INFO L93 Difference]: Finished difference Result 3702 states and 5021 transitions. [2022-11-19 07:04:20,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:04:20,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 200 [2022-11-19 07:04:20,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:20,960 INFO L225 Difference]: With dead ends: 3702 [2022-11-19 07:04:20,960 INFO L226 Difference]: Without dead ends: 2042 [2022-11-19 07:04:20,965 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 [2022-11-19 07:04:20,966 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 166 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:20,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 964 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 226 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-19 07:04:20,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2022-11-19 07:04:21,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1985. [2022-11-19 07:04:21,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1985 states, 1324 states have (on average 1.3353474320241692) internal successors, (1768), 1369 states have internal predecessors, (1768), 444 states have call successors, (444), 219 states have call predecessors, (444), 216 states have return successors, (465), 414 states have call predecessors, (465), 443 states have call successors, (465) [2022-11-19 07:04:21,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2677 transitions. [2022-11-19 07:04:21,159 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2677 transitions. Word has length 200 [2022-11-19 07:04:21,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:21,159 INFO L495 AbstractCegarLoop]: Abstraction has 1985 states and 2677 transitions. [2022-11-19 07:04:21,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-19 07:04:21,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2677 transitions. [2022-11-19 07:04:21,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-19 07:04:21,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:21,165 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2022-11-19 07:04:21,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:04:21,165 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:21,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:21,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1887848106, now seen corresponding path program 1 times [2022-11-19 07:04:21,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:21,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676005734] [2022-11-19 07:04:21,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:21,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-19 07:04:22,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:22,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676005734] [2022-11-19 07:04:22,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676005734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:04:22,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513129583] [2022-11-19 07:04:22,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:22,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:04:22,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:04:22,486 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:04:22,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:04:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:23,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 2391 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 07:04:23,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:04:24,005 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 70 proven. 44 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-19 07:04:24,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:04:24,858 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-19 07:04:24,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513129583] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:04:24,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1283111783] [2022-11-19 07:04:24,891 INFO L159 IcfgInterpreter]: Started Sifa with 128 locations of interest [2022-11-19 07:04:24,891 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:04:24,895 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:04:24,901 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:04:24,901 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:04:31,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 29 select indices, 29 select index equivalence classes, 473 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 0 case distinctions, treesize of input 332 treesize of output 444 [2022-11-19 07:04:31,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:31,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 29 select indices, 29 select index equivalence classes, 407 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 0 case distinctions, treesize of input 279 treesize of output 347 [2022-11-19 07:04:32,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:32,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:33,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:33,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:33,077 INFO L217 Elim1Store]: Index analysis took 1108 ms [2022-11-19 07:04:35,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 29 select indices, 29 select index equivalence classes, 408 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 354 [2022-11-19 07:04:35,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:35,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:35,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:35,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:35,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:36,213 INFO L217 Elim1Store]: Index analysis took 291 ms [2022-11-19 07:04:36,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 29 select indices, 29 select index equivalence classes, 410 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 0 case distinctions, treesize of input 289 treesize of output 365 [2022-11-19 07:04:37,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 29 select indices, 29 select index equivalence classes, 435 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 0 case distinctions, treesize of input 314 treesize of output 410 [2022-11-19 07:04:37,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:37,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:40,293 INFO L321 Elim1Store]: treesize reduction 1162, result has 25.4 percent of original size [2022-11-19 07:04:40,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 34 select indices, 34 select index equivalence classes, 500 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 93 case distinctions, treesize of input 184 treesize of output 517 [2022-11-19 07:04:40,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:40,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:40,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 31 select indices, 31 select index equivalence classes, 530 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 259 [2022-11-19 07:04:40,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 167 [2022-11-19 07:04:42,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 07:04:42,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 07:04:42,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-19 07:04:43,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 155 [2022-11-19 07:04:43,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 34 [2022-11-19 07:04:43,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:43,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:43,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 530 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 100 [2022-11-19 07:04:43,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:43,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:43,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 561 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-19 07:04:44,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 155 [2022-11-19 07:04:44,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 34 [2022-11-19 07:04:45,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:45,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:45,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 561 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-19 07:04:45,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:45,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:45,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 530 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 100 [2022-11-19 07:04:55,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:04:55,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:04:55,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:04:55,958 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:04:55,961 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:04:55,967 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:05:03,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:05:03,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:05:03,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:05:04,135 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:05:04,138 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:05:04,168 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:05:17,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:05:18,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:05:18,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:05:18,444 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:05:18,453 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:05:18,460 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:05:29,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:05:29,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:05:29,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:05:30,279 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:05:30,290 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:05:30,295 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:05:47,743 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_memset with input of size 722 for LOIs [2022-11-19 07:05:48,832 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_init_zalloc with input of size 116 for LOIs [2022-11-19 07:05:48,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 07:05:48,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 07:05:49,416 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.meminit with input of size 137 for LOIs [2022-11-19 07:05:49,435 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 142 for LOIs [2022-11-19 07:05:49,479 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:06:04,443 WARN L233 SmtUtils]: Spent 13.70s on a formula simplification. DAG size of input: 952 DAG size of output: 828 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:06:23,529 WARN L233 SmtUtils]: Spent 13.99s on a formula simplification. DAG size of input: 876 DAG size of output: 749 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:06:38,812 WARN L233 SmtUtils]: Spent 14.79s on a formula simplification. DAG size of input: 880 DAG size of output: 762 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:06:57,702 WARN L233 SmtUtils]: Spent 18.35s on a formula simplification. DAG size of input: 896 DAG size of output: 820 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:07:13,425 WARN L233 SmtUtils]: Spent 15.15s on a formula simplification. DAG size of input: 900 DAG size of output: 772 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:07:24,135 WARN L233 SmtUtils]: Spent 10.21s on a formula simplification. DAG size of input: 793 DAG size of output: 777 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:07:34,854 WARN L233 SmtUtils]: Spent 10.20s on a formula simplification. DAG size of input: 797 DAG size of output: 781 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:07:42,436 WARN L233 SmtUtils]: Spent 7.03s on a formula simplification. DAG size of input: 722 DAG size of output: 695 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:07:50,582 WARN L233 SmtUtils]: Spent 7.53s on a formula simplification. DAG size of input: 740 DAG size of output: 713 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:07:50,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1283111783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:50,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:07:50,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [5, 7, 7] total 34 [2022-11-19 07:07:50,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052067083] [2022-11-19 07:07:50,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:50,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 07:07:50,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:50,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 07:07:50,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=960, Unknown=0, NotChecked=0, Total=1122 [2022-11-19 07:07:50,627 INFO L87 Difference]: Start difference. First operand 1985 states and 2677 transitions. Second operand has 21 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 states have internal predecessors, (91), 7 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 6 states have call predecessors, (26), 7 states have call successors, (26) [2022-11-19 07:07:53,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:08:24,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:08:27,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:08:30,440 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 [] [2022-11-19 07:08:50,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:50,776 INFO L93 Difference]: Finished difference Result 3954 states and 5337 transitions. [2022-11-19 07:08:50,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 07:08:50,778 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 states have internal predecessors, (91), 7 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 6 states have call predecessors, (26), 7 states have call successors, (26) Word has length 211 [2022-11-19 07:08:50,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:50,788 INFO L225 Difference]: With dead ends: 3954 [2022-11-19 07:08:50,788 INFO L226 Difference]: Without dead ends: 1987 [2022-11-19 07:08:50,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 603 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 121.3s TimeCoverageRelationStatistics Valid=162, Invalid=960, Unknown=0, NotChecked=0, Total=1122 [2022-11-19 07:08:50,794 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 6 mSDsluCounter, 3630 mSDsCounter, 0 mSdLazyCounter, 2263 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4065 SdHoareTripleChecker+Invalid, 2783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2263 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 518 IncrementalHoareTripleChecker+Unchecked, 59.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:50,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4065 Invalid, 2783 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2263 Invalid, 1 Unknown, 518 Unchecked, 59.9s Time] [2022-11-19 07:08:50,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2022-11-19 07:08:50,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1987. [2022-11-19 07:08:50,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1987 states, 1326 states have (on average 1.334841628959276) internal successors, (1770), 1370 states have internal predecessors, (1770), 444 states have call successors, (444), 220 states have call predecessors, (444), 216 states have return successors, (465), 414 states have call predecessors, (465), 443 states have call successors, (465) [2022-11-19 07:08:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 2679 transitions. [2022-11-19 07:08:50,987 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 2679 transitions. Word has length 211 [2022-11-19 07:08:50,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:50,988 INFO L495 AbstractCegarLoop]: Abstraction has 1987 states and 2679 transitions. [2022-11-19 07:08:50,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 states have internal predecessors, (91), 7 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 6 states have call predecessors, (26), 7 states have call successors, (26) [2022-11-19 07:08:50,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 2679 transitions. [2022-11-19 07:08:50,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-19 07:08:50,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:50,993 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2022-11-19 07:08:51,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 07:08:51,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:51,203 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:51,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:51,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1855227980, now seen corresponding path program 1 times [2022-11-19 07:08:51,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:51,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475780385] [2022-11-19 07:08:51,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:51,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-19 07:08:52,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:52,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475780385] [2022-11-19 07:08:52,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475780385] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:52,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787930373] [2022-11-19 07:08:52,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:52,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:52,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:08:52,412 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:08:52,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:08:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:53,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 2406 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-19 07:08:53,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:08:53,490 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 60 proven. 3 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-19 07:08:53,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:08:53,791 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-19 07:08:53,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787930373] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:53,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:08:53,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-19 07:08:53,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556224343] [2022-11-19 07:08:53,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:53,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:08:53,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:53,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:08:53,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:08:53,793 INFO L87 Difference]: Start difference. First operand 1987 states and 2679 transitions. Second operand has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-19 07:08:57,986 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 [] [2022-11-19 07:08:58,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:58,379 INFO L93 Difference]: Finished difference Result 3951 states and 5332 transitions. [2022-11-19 07:08:58,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:08:58,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 212 [2022-11-19 07:08:58,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:58,390 INFO L225 Difference]: With dead ends: 3951 [2022-11-19 07:08:58,390 INFO L226 Difference]: Without dead ends: 1988 [2022-11-19 07:08:58,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:08:58,397 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:58,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1323 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 260 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-11-19 07:08:58,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2022-11-19 07:08:58,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 1986. [2022-11-19 07:08:58,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1986 states, 1325 states have (on average 1.3350943396226416) internal successors, (1769), 1370 states have internal predecessors, (1769), 444 states have call successors, (444), 219 states have call predecessors, (444), 216 states have return successors, (465), 414 states have call predecessors, (465), 443 states have call successors, (465) [2022-11-19 07:08:58,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 2678 transitions. [2022-11-19 07:08:58,593 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 2678 transitions. Word has length 212 [2022-11-19 07:08:58,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:58,593 INFO L495 AbstractCegarLoop]: Abstraction has 1986 states and 2678 transitions. [2022-11-19 07:08:58,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-19 07:08:58,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 2678 transitions. [2022-11-19 07:08:58,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-19 07:08:58,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:58,599 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2022-11-19 07:08:58,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:08:58,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:58,809 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:58,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:58,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1611549282, now seen corresponding path program 2 times [2022-11-19 07:08:58,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:58,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899296966] [2022-11-19 07:08:58,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:58,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-19 07:09:00,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:00,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899296966] [2022-11-19 07:09:00,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899296966] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:09:00,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531482209] [2022-11-19 07:09:00,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:09:00,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:09:00,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:09:00,014 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:09:00,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:09:23,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 07:09:23,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:09:23,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-19 07:09:23,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:09:23,840 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-19 07:09:23,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:09:23,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531482209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:23,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:09:23,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-11-19 07:09:23,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655663159] [2022-11-19 07:09:23,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:23,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:09:23,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:23,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:09:23,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:09:23,843 INFO L87 Difference]: Start difference. First operand 1986 states and 2678 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:09:28,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:09:30,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:09:31,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:31,394 INFO L93 Difference]: Finished difference Result 4198 states and 5724 transitions. [2022-11-19 07:09:31,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:09:31,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 213 [2022-11-19 07:09:31,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:31,405 INFO L225 Difference]: With dead ends: 4198 [2022-11-19 07:09:31,405 INFO L226 Difference]: Without dead ends: 2252 [2022-11-19 07:09:31,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:09:31,411 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 316 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2331 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:31,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 2331 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-19 07:09:31,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2022-11-19 07:09:31,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 1998. [2022-11-19 07:09:31,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1998 states, 1334 states have (on average 1.3328335832083957) internal successors, (1778), 1379 states have internal predecessors, (1778), 444 states have call successors, (444), 219 states have call predecessors, (444), 219 states have return successors, (475), 417 states have call predecessors, (475), 443 states have call successors, (475) [2022-11-19 07:09:31,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1998 states to 1998 states and 2697 transitions. [2022-11-19 07:09:31,610 INFO L78 Accepts]: Start accepts. Automaton has 1998 states and 2697 transitions. Word has length 213 [2022-11-19 07:09:31,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:31,610 INFO L495 AbstractCegarLoop]: Abstraction has 1998 states and 2697 transitions. [2022-11-19 07:09:31,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:09:31,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1998 states and 2697 transitions. [2022-11-19 07:09:31,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-19 07:09:31,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:31,616 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:09:31,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:09:31,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-19 07:09:31,832 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:31,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:31,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1309087236, now seen corresponding path program 1 times [2022-11-19 07:09:31,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:31,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866269295] [2022-11-19 07:09:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:31,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:33,012 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-11-19 07:09:33,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:33,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866269295] [2022-11-19 07:09:33,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866269295] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:09:33,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708315387] [2022-11-19 07:09:33,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:33,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:09:33,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:09:33,015 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:09:33,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:09:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:34,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 07:09:34,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:09:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 78 proven. 44 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-19 07:09:34,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:09:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-19 07:09:35,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708315387] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:09:35,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [236751141] [2022-11-19 07:09:35,364 INFO L159 IcfgInterpreter]: Started Sifa with 130 locations of interest [2022-11-19 07:09:35,364 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:09:35,365 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:09:35,366 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:09:35,366 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:09:40,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:40,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 29 select indices, 29 select index equivalence classes, 473 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 0 case distinctions, treesize of input 332 treesize of output 444 [2022-11-19 07:09:41,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 29 select indices, 29 select index equivalence classes, 407 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 0 case distinctions, treesize of input 279 treesize of output 347 [2022-11-19 07:09:41,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:41,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:42,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:42,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:42,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:42,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:42,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:42,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:42,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:42,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:42,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:42,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:42,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:42,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:42,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:42,300 INFO L217 Elim1Store]: Index analysis took 687 ms [2022-11-19 07:09:43,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 29 select indices, 29 select index equivalence classes, 410 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 0 case distinctions, treesize of input 287 treesize of output 363 [2022-11-19 07:09:43,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:44,273 INFO L217 Elim1Store]: Index analysis took 311 ms [2022-11-19 07:09:44,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 29 select indices, 29 select index equivalence classes, 408 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 0 case distinctions, treesize of input 284 treesize of output 356 [2022-11-19 07:09:45,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 29 select indices, 29 select index equivalence classes, 435 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 0 case distinctions, treesize of input 314 treesize of output 410 [2022-11-19 07:09:45,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:45,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,278 INFO L321 Elim1Store]: treesize reduction 704, result has 34.2 percent of original size [2022-11-19 07:09:47,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 31 select indices, 31 select index equivalence classes, 469 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 31 case distinctions, treesize of input 165 treesize of output 469 [2022-11-19 07:09:47,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 167 [2022-11-19 07:09:47,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,974 INFO L217 Elim1Store]: Index analysis took 266 ms [2022-11-19 07:09:51,755 INFO L321 Elim1Store]: treesize reduction 1162, result has 25.4 percent of original size [2022-11-19 07:09:51,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 34 select indices, 34 select index equivalence classes, 500 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 93 case distinctions, treesize of input 184 treesize of output 517 [2022-11-19 07:09:53,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 07:09:53,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 07:09:53,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-19 07:09:53,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 530 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 100 [2022-11-19 07:09:54,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 155 [2022-11-19 07:09:54,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 34 [2022-11-19 07:09:54,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 561 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-19 07:09:56,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 155 [2022-11-19 07:09:56,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 34 [2022-11-19 07:09:56,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:56,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:56,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 561 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-19 07:09:56,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:56,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:56,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 530 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 100 [2022-11-19 07:09:58,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:09:58,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:09:58,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:09:59,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:09:59,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:09:59,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:10:11,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:10:11,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:10:11,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:10:12,088 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:12,094 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:12,118 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:21,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:10:21,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:10:21,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:10:21,654 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:21,668 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:21,677 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:31,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:10:31,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:10:31,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:10:31,395 INFO L321 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-11-19 07:10:31,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 105 [2022-11-19 07:10:31,437 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 07:10:31,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 99 [2022-11-19 07:10:31,471 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 07:10:31,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 95 [2022-11-19 07:10:31,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 07:10:31,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 07:10:31,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 07:10:32,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 76 select indices, 76 select index equivalence classes, 1488 disjoint index pairs (out of 2850 index pairs), introduced 76 new quantified variables, introduced 0 case distinctions, treesize of input 681 treesize of output 229 [2022-11-19 07:10:33,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:10:33,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:33,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 76 select indices, 76 select index equivalence classes, 1488 disjoint index pairs (out of 2850 index pairs), introduced 76 new quantified variables, introduced 0 case distinctions, treesize of input 681 treesize of output 229 [2022-11-19 07:10:33,691 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:33,699 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:42,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 76 select indices, 76 select index equivalence classes, 1488 disjoint index pairs (out of 2850 index pairs), introduced 76 new quantified variables, introduced 0 case distinctions, treesize of input 681 treesize of output 229 [2022-11-19 07:10:42,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:42,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 76 select indices, 76 select index equivalence classes, 1488 disjoint index pairs (out of 2850 index pairs), introduced 76 new quantified variables, introduced 0 case distinctions, treesize of input 681 treesize of output 229 [2022-11-19 07:10:42,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:10:43,159 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:43,163 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:10:45,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:10:45,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:10:45,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:10:46,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:10:59,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:59,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:59,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:59,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:59,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:59,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:59,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:59,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 29 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 62 [2022-11-19 07:10:59,636 INFO L321 Elim1Store]: treesize reduction 81, result has 25.7 percent of original size [2022-11-19 07:10:59,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 33 [2022-11-19 07:10:59,736 INFO L321 Elim1Store]: treesize reduction 141, result has 10.2 percent of original size [2022-11-19 07:10:59,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 60 treesize of output 57 [2022-11-19 07:10:59,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:59,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:59,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:59,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:59,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:59,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:59,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:59,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 60 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 71 [2022-11-19 07:10:59,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:59,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:59,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-19 07:10:59,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 14 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2022-11-19 07:11:00,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 07:11:00,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 07:11:00,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-19 07:11:00,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-19 07:11:00,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-19 07:11:00,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-19 07:11:11,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:11:11,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:11:14,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:11:14,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:11:17,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:11:17,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 44 [2022-11-19 07:11:17,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:11:17,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:11:17,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:11:17,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:11:17,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2022-11-19 07:11:17,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:11:17,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:17,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 26 [2022-11-19 07:11:17,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:11:30,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:30,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:30,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:30,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:30,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:31,105 INFO L321 Elim1Store]: treesize reduction 97, result has 16.4 percent of original size [2022-11-19 07:11:31,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 954 treesize of output 893 [2022-11-19 07:11:31,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:31,370 INFO L321 Elim1Store]: treesize reduction 124, result has 29.1 percent of original size [2022-11-19 07:11:31,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 909 treesize of output 854 [2022-11-19 07:11:31,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:31,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:31,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:31,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:31,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:11:31,527 INFO L321 Elim1Store]: treesize reduction 97, result has 16.4 percent of original size [2022-11-19 07:11:31,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 853 treesize of output 816 [2022-11-19 07:11:46,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-19 07:11:46,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-19 07:11:46,806 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:11:46,809 INFO L158 Benchmark]: Toolchain (without parser) took 483592.37ms. Allocated memory was 127.9MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 83.8MB in the beginning and 1.0GB in the end (delta: -941.5MB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2022-11-19 07:11:46,809 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 79.7MB. Free memory was 53.9MB in the beginning and 53.9MB in the end (delta: 30.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:11:46,809 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1786.75ms. Allocated memory was 127.9MB in the beginning and 172.0MB in the end (delta: 44.0MB). Free memory was 83.6MB in the beginning and 111.7MB in the end (delta: -28.1MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. [2022-11-19 07:11:46,810 INFO L158 Benchmark]: Boogie Procedure Inliner took 166.59ms. Allocated memory is still 172.0MB. Free memory was 111.7MB in the beginning and 99.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 07:11:46,810 INFO L158 Benchmark]: Boogie Preprocessor took 121.40ms. Allocated memory is still 172.0MB. Free memory was 99.9MB in the beginning and 87.2MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 07:11:46,810 INFO L158 Benchmark]: RCFGBuilder took 4700.25ms. Allocated memory was 172.0MB in the beginning and 320.9MB in the end (delta: 148.9MB). Free memory was 87.2MB in the beginning and 207.0MB in the end (delta: -119.8MB). Peak memory consumption was 108.4MB. Max. memory is 16.1GB. [2022-11-19 07:11:46,810 INFO L158 Benchmark]: TraceAbstraction took 476809.13ms. Allocated memory was 320.9MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 207.0MB in the beginning and 1.0GB in the end (delta: -818.3MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-11-19 07:11:46,812 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 79.7MB. Free memory was 53.9MB in the beginning and 53.9MB in the end (delta: 30.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1786.75ms. Allocated memory was 127.9MB in the beginning and 172.0MB in the end (delta: 44.0MB). Free memory was 83.6MB in the beginning and 111.7MB in the end (delta: -28.1MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 166.59ms. Allocated memory is still 172.0MB. Free memory was 111.7MB in the beginning and 99.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 121.40ms. Allocated memory is still 172.0MB. Free memory was 99.9MB in the beginning and 87.2MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 4700.25ms. Allocated memory was 172.0MB in the beginning and 320.9MB in the end (delta: 148.9MB). Free memory was 87.2MB in the beginning and 207.0MB in the end (delta: -119.8MB). Peak memory consumption was 108.4MB. Max. memory is 16.1GB. * TraceAbstraction took 476809.13ms. Allocated memory was 320.9MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 207.0MB in the beginning and 1.0GB in the end (delta: -818.3MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-19 07:11:46,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS --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 8f21bcf4203715ff2cf8f1fa847025b0ca29b6eb32fc30a64baf7cbf3cb00ebc --- 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-8393723 [2022-11-19 07:11:49,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:11:49,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:11:49,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:11:49,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:11:49,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:11:49,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:11:49,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:11:49,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:11:49,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:11:49,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:11:49,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:11:49,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:11:49,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:11:49,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:11:49,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:11:49,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:11:49,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:11:49,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:11:49,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:11:49,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:11:49,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:11:49,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:11:49,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:11:49,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:11:49,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:11:49,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:11:49,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:11:49,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:11:49,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:11:49,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:11:49,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:11:49,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:11:49,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:11:49,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:11:49,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:11:49,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:11:49,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:11:49,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:11:49,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:11:49,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:11:49,340 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 07:11:49,380 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:11:49,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:11:49,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:11:49,383 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:11:49,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:11:49,384 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:11:49,384 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:11:49,384 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:11:49,384 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:11:49,385 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:11:49,386 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:11:49,386 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:11:49,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:11:49,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:11:49,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:11:49,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:11:49,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:11:49,389 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:11:49,389 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:11:49,389 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:11:49,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:11:49,390 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:11:49,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:11:49,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:11:49,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:11:49,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:11:49,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:11:49,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:11:49,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:11:49,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:11:49,392 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:11:49,392 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:11:49,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:11:49,393 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:11:49,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:11:49,393 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f21bcf4203715ff2cf8f1fa847025b0ca29b6eb32fc30a64baf7cbf3cb00ebc [2022-11-19 07:11:49,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:11:49,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:11:49,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:11:49,847 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:11:49,848 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:11:49,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-19 07:11:49,920 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/data/1eb3f0fa5/7bde5ee4c7054d64b01e23d63326d07d/FLAG25ccd09a2 [2022-11-19 07:11:50,894 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:11:50,895 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-19 07:11:50,946 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/data/1eb3f0fa5/7bde5ee4c7054d64b01e23d63326d07d/FLAG25ccd09a2 [2022-11-19 07:11:51,302 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/data/1eb3f0fa5/7bde5ee4c7054d64b01e23d63326d07d [2022-11-19 07:11:51,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:11:51,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:11:51,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:11:51,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:11:51,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:11:51,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:11:51" (1/1) ... [2022-11-19 07:11:51,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e9ad60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:51, skipping insertion in model container [2022-11-19 07:11:51,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:11:51" (1/1) ... [2022-11-19 07:11:51,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:11:51,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:11:52,641 WARN L234 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_41a8e49b-367f-4eae-b7cf-315f4d8054e8/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2022-11-19 07:11:52,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:11:52,726 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 07:11:52,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:11:53,090 WARN L234 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_41a8e49b-367f-4eae-b7cf-315f4d8054e8/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2022-11-19 07:11:53,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:11:53,138 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:11:53,364 WARN L234 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_41a8e49b-367f-4eae-b7cf-315f4d8054e8/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2022-11-19 07:11:53,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:11:53,496 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:11:53,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:53 WrapperNode [2022-11-19 07:11:53,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:11:53,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:11:53,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:11:53,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:11:53,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:53" (1/1) ... [2022-11-19 07:11:53,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:53" (1/1) ... [2022-11-19 07:11:53,685 INFO L138 Inliner]: procedures = 167, calls = 606, calls flagged for inlining = 71, calls inlined = 71, statements flattened = 1778 [2022-11-19 07:11:53,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:11:53,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:11:53,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:11:53,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:11:53,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:53" (1/1) ... [2022-11-19 07:11:53,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:53" (1/1) ... [2022-11-19 07:11:53,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:53" (1/1) ... [2022-11-19 07:11:53,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:53" (1/1) ... [2022-11-19 07:11:53,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:53" (1/1) ... [2022-11-19 07:11:53,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:53" (1/1) ... [2022-11-19 07:11:53,826 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:53" (1/1) ... [2022-11-19 07:11:53,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:53" (1/1) ... [2022-11-19 07:11:53,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:11:53,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:11:53,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:11:53,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:11:53,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:53" (1/1) ... [2022-11-19 07:11:53,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:11:53,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:11:53,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:11:53,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:11:53,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_11 [2022-11-19 07:11:53,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_11 [2022-11-19 07:11:53,968 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 07:11:53,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 07:11:53,968 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_ioctl [2022-11-19 07:11:53,968 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_ioctl [2022-11-19 07:11:53,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-19 07:11:53,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2022-11-19 07:11:53,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2022-11-19 07:11:53,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2022-11-19 07:11:53,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2022-11-19 07:11:53,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-19 07:11:53,969 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_close [2022-11-19 07:11:53,970 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_close [2022-11-19 07:11:53,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 07:11:53,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:11:53,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-19 07:11:53,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:11:53,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:11:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:11:53,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:11:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:11:53,971 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-11-19 07:11:53,972 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-11-19 07:11:53,972 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 07:11:53,972 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 07:11:53,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-19 07:11:53,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-19 07:11:53,972 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-19 07:11:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-19 07:11:53,973 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2022-11-19 07:11:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2022-11-19 07:11:53,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:11:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:11:53,974 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 07:11:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 07:11:53,974 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-19 07:11:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-19 07:11:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:11:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:11:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-19 07:11:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-19 07:11:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-19 07:11:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_disconnect [2022-11-19 07:11:53,976 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_disconnect [2022-11-19 07:11:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_set_mtu [2022-11-19 07:11:53,977 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_set_mtu [2022-11-19 07:11:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2022-11-19 07:11:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2022-11-19 07:11:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:11:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:11:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-19 07:11:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-19 07:11:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-19 07:11:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-19 07:11:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:11:53,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:11:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure rx_submit [2022-11-19 07:11:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_submit [2022-11-19 07:11:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 07:11:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 07:11:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:11:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:11:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 07:11:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 07:11:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:11:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 07:11:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 07:11:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 07:11:53,985 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 07:11:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:11:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 07:11:53,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 07:11:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:11:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:11:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 07:11:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-19 07:11:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-19 07:11:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:11:53,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:11:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-19 07:11:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:11:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2022-11-19 07:11:53,988 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2022-11-19 07:11:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-19 07:11:53,989 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-19 07:11:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 07:11:53,990 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 07:11:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-19 07:11:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-19 07:11:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-19 07:11:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:11:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 07:11:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:11:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:11:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-19 07:11:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-19 07:11:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-19 07:11:53,992 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-19 07:11:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-19 07:11:53,992 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-19 07:11:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 07:11:53,993 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 07:11:53,993 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 07:11:53,993 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 07:11:53,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-19 07:11:53,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-19 07:11:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-19 07:11:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:11:53,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:11:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure rx_complete [2022-11-19 07:11:53,998 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_complete [2022-11-19 07:11:54,572 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:11:54,575 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:11:59,448 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:12:15,110 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:12:15,124 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:12:15,124 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:12:15,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:12:15 BoogieIcfgContainer [2022-11-19 07:12:15,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:12:15,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:12:15,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:12:15,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:12:15,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:11:51" (1/3) ... [2022-11-19 07:12:15,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6547105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:12:15, skipping insertion in model container [2022-11-19 07:12:15,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:53" (2/3) ... [2022-11-19 07:12:15,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6547105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:12:15, skipping insertion in model container [2022-11-19 07:12:15,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:12:15" (3/3) ... [2022-11-19 07:12:15,137 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-19 07:12:15,156 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:12:15,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:12:15,220 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:12:15,226 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;@36c6e9b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:12:15,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:12:15,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 598 states, 444 states have (on average 1.3513513513513513) internal successors, (600), 463 states have internal predecessors, (600), 113 states have call successors, (113), 40 states have call predecessors, (113), 39 states have return successors, (107), 105 states have call predecessors, (107), 107 states have call successors, (107) [2022-11-19 07:12:15,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-19 07:12:15,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:15,249 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:15,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:15,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:15,256 INFO L85 PathProgramCache]: Analyzing trace with hash 148447644, now seen corresponding path program 1 times [2022-11-19 07:12:15,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:15,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141956561] [2022-11-19 07:12:15,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:15,278 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:15,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:15,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:12:15,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 07:12:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:16,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 07:12:16,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:16,095 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-19 07:12:16,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:16,096 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:16,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141956561] [2022-11-19 07:12:16,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141956561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:16,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:16,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:12:16,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320780262] [2022-11-19 07:12:16,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:16,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:12:16,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:16,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:12:16,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:12:16,138 INFO L87 Difference]: Start difference. First operand has 598 states, 444 states have (on average 1.3513513513513513) internal successors, (600), 463 states have internal predecessors, (600), 113 states have call successors, (113), 40 states have call predecessors, (113), 39 states have return successors, (107), 105 states have call predecessors, (107), 107 states have call successors, (107) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-19 07:12:16,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:16,252 INFO L93 Difference]: Finished difference Result 1191 states and 1659 transitions. [2022-11-19 07:12:16,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:12:16,264 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 78 [2022-11-19 07:12:16,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:16,286 INFO L225 Difference]: With dead ends: 1191 [2022-11-19 07:12:16,291 INFO L226 Difference]: Without dead ends: 584 [2022-11-19 07:12:16,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:12:16,309 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:16,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:12:16,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-11-19 07:12:16,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2022-11-19 07:12:16,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 438 states have (on average 1.3333333333333333) internal successors, (584), 449 states have internal predecessors, (584), 107 states have call successors, (107), 39 states have call predecessors, (107), 38 states have return successors, (102), 100 states have call predecessors, (102), 102 states have call successors, (102) [2022-11-19 07:12:16,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 793 transitions. [2022-11-19 07:12:16,464 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 793 transitions. Word has length 78 [2022-11-19 07:12:16,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:16,465 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 793 transitions. [2022-11-19 07:12:16,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-19 07:12:16,465 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 793 transitions. [2022-11-19 07:12:16,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-19 07:12:16,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:16,469 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:16,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:16,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:16,688 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:16,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:16,688 INFO L85 PathProgramCache]: Analyzing trace with hash 354669602, now seen corresponding path program 1 times [2022-11-19 07:12:16,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:16,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967690568] [2022-11-19 07:12:16,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:16,690 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:16,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:16,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:12:16,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 07:12:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:17,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:12:17,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:17,701 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-19 07:12:17,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:17,702 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:17,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967690568] [2022-11-19 07:12:17,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967690568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:17,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:17,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:12:17,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576363667] [2022-11-19 07:12:17,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:17,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:12:17,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:17,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:12:17,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:12:17,705 INFO L87 Difference]: Start difference. First operand 584 states and 793 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 07:12:17,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:17,897 INFO L93 Difference]: Finished difference Result 1162 states and 1578 transitions. [2022-11-19 07:12:17,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:12:17,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 78 [2022-11-19 07:12:17,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:17,904 INFO L225 Difference]: With dead ends: 1162 [2022-11-19 07:12:17,904 INFO L226 Difference]: Without dead ends: 585 [2022-11-19 07:12:17,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:12:17,907 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 3 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2368 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:17,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2368 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:12:17,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-19 07:12:17,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2022-11-19 07:12:17,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 439 states have (on average 1.3325740318906605) internal successors, (585), 450 states have internal predecessors, (585), 107 states have call successors, (107), 39 states have call predecessors, (107), 38 states have return successors, (102), 100 states have call predecessors, (102), 102 states have call successors, (102) [2022-11-19 07:12:17,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 794 transitions. [2022-11-19 07:12:17,937 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 794 transitions. Word has length 78 [2022-11-19 07:12:17,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:17,939 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 794 transitions. [2022-11-19 07:12:17,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 07:12:17,939 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 794 transitions. [2022-11-19 07:12:17,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-19 07:12:17,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:17,942 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:12:17,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:18,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:18,162 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:18,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:18,162 INFO L85 PathProgramCache]: Analyzing trace with hash -72101774, now seen corresponding path program 1 times [2022-11-19 07:12:18,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:18,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012585237] [2022-11-19 07:12:18,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:18,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:18,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:18,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:12:18,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-19 07:12:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:18,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:12:18,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-19 07:12:19,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:19,698 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-19 07:12:19,698 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:19,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012585237] [2022-11-19 07:12:19,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012585237] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:19,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1362299204] [2022-11-19 07:12:19,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:19,699 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:19,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:12:19,702 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:12:19,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-11-19 07:12:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:20,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:12:20,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:20,622 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-19 07:12:20,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:20,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1362299204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:20,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:12:20,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-19 07:12:20,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949940502] [2022-11-19 07:12:20,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:20,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:20,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:20,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:20,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:20,625 INFO L87 Difference]: Start difference. First operand 585 states and 794 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-19 07:12:22,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:22,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:22,914 INFO L93 Difference]: Finished difference Result 1694 states and 2306 transitions. [2022-11-19 07:12:22,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:12:22,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 80 [2022-11-19 07:12:22,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:22,923 INFO L225 Difference]: With dead ends: 1694 [2022-11-19 07:12:22,924 INFO L226 Difference]: Without dead ends: 1128 [2022-11-19 07:12:22,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:22,927 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 741 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:22,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1673 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-19 07:12:22,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2022-11-19 07:12:22,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1128. [2022-11-19 07:12:22,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 849 states have (on average 1.3333333333333333) internal successors, (1132), 867 states have internal predecessors, (1132), 203 states have call successors, (203), 76 states have call predecessors, (203), 75 states have return successors, (198), 194 states have call predecessors, (198), 198 states have call successors, (198) [2022-11-19 07:12:22,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1533 transitions. [2022-11-19 07:12:22,999 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1533 transitions. Word has length 80 [2022-11-19 07:12:23,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:23,000 INFO L495 AbstractCegarLoop]: Abstraction has 1128 states and 1533 transitions. [2022-11-19 07:12:23,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-19 07:12:23,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1533 transitions. [2022-11-19 07:12:23,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-19 07:12:23,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:23,004 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:12:23,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:23,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:23,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:23,412 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:23,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:23,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1968189157, now seen corresponding path program 1 times [2022-11-19 07:12:23,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:23,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657945746] [2022-11-19 07:12:23,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:23,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:23,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:23,415 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:12:23,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-19 07:12:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:24,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:12:24,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:24,323 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-19 07:12:24,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-19 07:12:24,917 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:24,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657945746] [2022-11-19 07:12:24,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657945746] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:24,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [314746084] [2022-11-19 07:12:24,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:24,918 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:24,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:12:24,919 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:12:24,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-19 07:12:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:25,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:12:25,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:25,787 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-19 07:12:25,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:25,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [314746084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:25,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:12:25,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-19 07:12:25,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571323920] [2022-11-19 07:12:25,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:25,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:25,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:25,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:25,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:25,790 INFO L87 Difference]: Start difference. First operand 1128 states and 1533 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 07:12:26,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:26,002 INFO L93 Difference]: Finished difference Result 1154 states and 1565 transitions. [2022-11-19 07:12:26,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:12:26,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 100 [2022-11-19 07:12:26,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:26,009 INFO L225 Difference]: With dead ends: 1154 [2022-11-19 07:12:26,010 INFO L226 Difference]: Without dead ends: 1141 [2022-11-19 07:12:26,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:26,012 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 788 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:26,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 824 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:12:26,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2022-11-19 07:12:26,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1128. [2022-11-19 07:12:26,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 849 states have (on average 1.332155477031802) internal successors, (1131), 867 states have internal predecessors, (1131), 203 states have call successors, (203), 76 states have call predecessors, (203), 75 states have return successors, (198), 194 states have call predecessors, (198), 198 states have call successors, (198) [2022-11-19 07:12:26,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1532 transitions. [2022-11-19 07:12:26,105 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1532 transitions. Word has length 100 [2022-11-19 07:12:26,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:26,107 INFO L495 AbstractCegarLoop]: Abstraction has 1128 states and 1532 transitions. [2022-11-19 07:12:26,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 07:12:26,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1532 transitions. [2022-11-19 07:12:26,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-19 07:12:26,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:26,116 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:12:26,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:26,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:26,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:26,522 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:26,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:26,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1910930855, now seen corresponding path program 1 times [2022-11-19 07:12:26,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:26,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517130919] [2022-11-19 07:12:26,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:26,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:26,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:26,525 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:12:26,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-19 07:12:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:27,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:12:27,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:27,436 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-19 07:12:27,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-19 07:12:28,004 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:28,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517130919] [2022-11-19 07:12:28,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517130919] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:28,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1382940121] [2022-11-19 07:12:28,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:28,005 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:28,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:12:28,007 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:12:28,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-19 07:12:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:28,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:12:28,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-19 07:12:30,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:30,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1382940121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:30,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:12:30,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 9 [2022-11-19 07:12:30,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649152092] [2022-11-19 07:12:30,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:30,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:30,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:30,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:30,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:30,624 INFO L87 Difference]: Start difference. First operand 1128 states and 1532 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 07:12:30,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:30,945 INFO L93 Difference]: Finished difference Result 3345 states and 4629 transitions. [2022-11-19 07:12:30,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:12:30,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 100 [2022-11-19 07:12:30,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:30,962 INFO L225 Difference]: With dead ends: 3345 [2022-11-19 07:12:30,962 INFO L226 Difference]: Without dead ends: 2236 [2022-11-19 07:12:30,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:30,968 INFO L413 NwaCegarLoop]: 1126 mSDtfsCounter, 750 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:30,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1888 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:12:30,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2022-11-19 07:12:31,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 2226. [2022-11-19 07:12:31,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2226 states, 1680 states have (on average 1.331547619047619) internal successors, (2237), 1712 states have internal predecessors, (2237), 396 states have call successors, (396), 150 states have call predecessors, (396), 149 states have return successors, (423), 383 states have call predecessors, (423), 391 states have call successors, (423) [2022-11-19 07:12:31,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 3056 transitions. [2022-11-19 07:12:31,160 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 3056 transitions. Word has length 100 [2022-11-19 07:12:31,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:31,161 INFO L495 AbstractCegarLoop]: Abstraction has 2226 states and 3056 transitions. [2022-11-19 07:12:31,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 07:12:31,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 3056 transitions. [2022-11-19 07:12:31,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-19 07:12:31,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:31,163 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:12:31,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:31,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:31,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:31,587 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:31,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:31,588 INFO L85 PathProgramCache]: Analyzing trace with hash 890453729, now seen corresponding path program 1 times [2022-11-19 07:12:31,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:31,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601751281] [2022-11-19 07:12:31,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:31,589 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:31,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:31,590 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:12:31,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-19 07:12:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:32,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:12:32,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:32,470 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-19 07:12:32,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:33,002 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-19 07:12:33,003 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:33,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601751281] [2022-11-19 07:12:33,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601751281] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:33,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [674289310] [2022-11-19 07:12:33,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:33,004 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:33,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:12:33,014 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:12:33,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-19 07:12:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:33,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:12:33,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:35,645 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-19 07:12:35,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:35,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [674289310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:35,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:12:35,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 9 [2022-11-19 07:12:35,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307844388] [2022-11-19 07:12:35,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:35,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:35,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:35,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:35,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:35,648 INFO L87 Difference]: Start difference. First operand 2226 states and 3056 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 07:12:35,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:35,823 INFO L93 Difference]: Finished difference Result 2228 states and 3057 transitions. [2022-11-19 07:12:35,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:12:35,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 101 [2022-11-19 07:12:35,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:35,835 INFO L225 Difference]: With dead ends: 2228 [2022-11-19 07:12:35,836 INFO L226 Difference]: Without dead ends: 2225 [2022-11-19 07:12:35,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:35,838 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 737 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:35,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 790 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:12:35,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2022-11-19 07:12:36,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2225. [2022-11-19 07:12:36,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 1680 states have (on average 1.3309523809523809) internal successors, (2236), 1711 states have internal predecessors, (2236), 395 states have call successors, (395), 150 states have call predecessors, (395), 149 states have return successors, (423), 383 states have call predecessors, (423), 391 states have call successors, (423) [2022-11-19 07:12:36,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3054 transitions. [2022-11-19 07:12:36,049 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3054 transitions. Word has length 101 [2022-11-19 07:12:36,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:36,051 INFO L495 AbstractCegarLoop]: Abstraction has 2225 states and 3054 transitions. [2022-11-19 07:12:36,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 07:12:36,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3054 transitions. [2022-11-19 07:12:36,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-19 07:12:36,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:36,054 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:12:36,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-19 07:12:36,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:36,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:36,474 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:36,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:36,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1834034780, now seen corresponding path program 1 times [2022-11-19 07:12:36,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:36,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52783808] [2022-11-19 07:12:36,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:36,475 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:36,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:36,478 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:12:36,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-19 07:12:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:37,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:12:37,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-19 07:12:37,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-19 07:12:37,869 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:37,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52783808] [2022-11-19 07:12:37,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52783808] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:37,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1949715147] [2022-11-19 07:12:37,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:37,870 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:37,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:12:37,871 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:12:37,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-19 07:12:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:38,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:12:38,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:39,554 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-19 07:12:39,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:39,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1949715147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:39,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:12:39,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 9 [2022-11-19 07:12:39,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931753779] [2022-11-19 07:12:39,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:39,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:39,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:39,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:39,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:39,556 INFO L87 Difference]: Start difference. First operand 2225 states and 3054 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 07:12:39,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:39,765 INFO L93 Difference]: Finished difference Result 2227 states and 3055 transitions. [2022-11-19 07:12:39,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:12:39,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 102 [2022-11-19 07:12:39,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:39,777 INFO L225 Difference]: With dead ends: 2227 [2022-11-19 07:12:39,777 INFO L226 Difference]: Without dead ends: 2224 [2022-11-19 07:12:39,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:39,779 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 734 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:39,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 788 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:12:39,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2022-11-19 07:12:39,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 2224. [2022-11-19 07:12:39,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 1680 states have (on average 1.3303571428571428) internal successors, (2235), 1710 states have internal predecessors, (2235), 394 states have call successors, (394), 150 states have call predecessors, (394), 149 states have return successors, (423), 383 states have call predecessors, (423), 391 states have call successors, (423) [2022-11-19 07:12:39,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 3052 transitions. [2022-11-19 07:12:39,996 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 3052 transitions. Word has length 102 [2022-11-19 07:12:39,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:39,996 INFO L495 AbstractCegarLoop]: Abstraction has 2224 states and 3052 transitions. [2022-11-19 07:12:39,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 07:12:39,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 3052 transitions. [2022-11-19 07:12:39,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-19 07:12:39,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:39,999 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:12:40,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:40,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:40,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:40,413 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:40,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:40,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1020281156, now seen corresponding path program 1 times [2022-11-19 07:12:40,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:40,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097518566] [2022-11-19 07:12:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:40,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:40,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:40,416 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:12:40,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-19 07:12:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:41,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:12:41,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-19 07:12:41,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:41,919 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-19 07:12:41,920 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:41,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097518566] [2022-11-19 07:12:41,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097518566] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:41,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [397882832] [2022-11-19 07:12:41,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:41,920 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:41,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:12:41,921 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:12:41,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-19 07:12:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:42,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:12:42,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-19 07:12:43,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:43,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [397882832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:43,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:12:43,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 9 [2022-11-19 07:12:43,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534227565] [2022-11-19 07:12:43,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:43,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:43,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:43,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:43,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:43,586 INFO L87 Difference]: Start difference. First operand 2224 states and 3052 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 07:12:43,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:43,787 INFO L93 Difference]: Finished difference Result 2226 states and 3053 transitions. [2022-11-19 07:12:43,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:12:43,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 103 [2022-11-19 07:12:43,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:43,802 INFO L225 Difference]: With dead ends: 2226 [2022-11-19 07:12:43,802 INFO L226 Difference]: Without dead ends: 2223 [2022-11-19 07:12:43,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:43,804 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 731 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:43,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 786 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:12:43,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2022-11-19 07:12:44,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2223. [2022-11-19 07:12:44,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2223 states, 1680 states have (on average 1.3297619047619047) internal successors, (2234), 1709 states have internal predecessors, (2234), 393 states have call successors, (393), 150 states have call predecessors, (393), 149 states have return successors, (423), 383 states have call predecessors, (423), 391 states have call successors, (423) [2022-11-19 07:12:44,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 3050 transitions. [2022-11-19 07:12:44,026 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 3050 transitions. Word has length 103 [2022-11-19 07:12:44,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:44,027 INFO L495 AbstractCegarLoop]: Abstraction has 2223 states and 3050 transitions. [2022-11-19 07:12:44,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 07:12:44,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 3050 transitions. [2022-11-19 07:12:44,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-19 07:12:44,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:44,029 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:12:44,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:44,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:44,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:44,436 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:44,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:44,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1563727455, now seen corresponding path program 1 times [2022-11-19 07:12:44,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:44,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483534054] [2022-11-19 07:12:44,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:44,438 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:44,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:44,439 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:12:44,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-19 07:12:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:45,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:12:45,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-19 07:12:45,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:45,826 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-19 07:12:45,827 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:45,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483534054] [2022-11-19 07:12:45,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483534054] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:45,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1522359391] [2022-11-19 07:12:45,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:45,828 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:45,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:12:45,831 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:12:45,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-19 07:12:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:46,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:12:46,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:47,591 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-19 07:12:47,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:47,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1522359391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:47,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:12:47,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 9 [2022-11-19 07:12:47,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060976094] [2022-11-19 07:12:47,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:47,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:47,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:47,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:47,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:47,593 INFO L87 Difference]: Start difference. First operand 2223 states and 3050 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 07:12:47,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:47,819 INFO L93 Difference]: Finished difference Result 2225 states and 3051 transitions. [2022-11-19 07:12:47,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:12:47,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 104 [2022-11-19 07:12:47,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:47,835 INFO L225 Difference]: With dead ends: 2225 [2022-11-19 07:12:47,835 INFO L226 Difference]: Without dead ends: 2213 [2022-11-19 07:12:47,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:47,838 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 728 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:47,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:12:47,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2022-11-19 07:12:48,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 2213. [2022-11-19 07:12:48,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2213 states, 1671 states have (on average 1.3297426690604428) internal successors, (2222), 1699 states have internal predecessors, (2222), 392 states have call successors, (392), 150 states have call predecessors, (392), 149 states have return successors, (423), 383 states have call predecessors, (423), 391 states have call successors, (423) [2022-11-19 07:12:48,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 3037 transitions. [2022-11-19 07:12:48,092 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 3037 transitions. Word has length 104 [2022-11-19 07:12:48,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:48,092 INFO L495 AbstractCegarLoop]: Abstraction has 2213 states and 3037 transitions. [2022-11-19 07:12:48,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 07:12:48,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 3037 transitions. [2022-11-19 07:12:48,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-19 07:12:48,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:48,099 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:12:48,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:48,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:48,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:48,506 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:48,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:48,506 INFO L85 PathProgramCache]: Analyzing trace with hash 824528998, now seen corresponding path program 1 times [2022-11-19 07:12:48,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:48,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155961261] [2022-11-19 07:12:48,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:48,507 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:48,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:48,508 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:12:48,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-19 07:12:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:49,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:12:49,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-19 07:12:49,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:49,961 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-19 07:12:49,962 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:49,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155961261] [2022-11-19 07:12:49,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155961261] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:49,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [404412982] [2022-11-19 07:12:49,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:49,963 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:49,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:12:49,970 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:12:49,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-19 07:12:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:50,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:12:50,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:51,005 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-19 07:12:51,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:51,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [404412982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:51,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:12:51,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-19 07:12:51,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878065035] [2022-11-19 07:12:51,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:51,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:51,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:51,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:51,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:51,008 INFO L87 Difference]: Start difference. First operand 2213 states and 3037 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:12:51,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:51,720 INFO L93 Difference]: Finished difference Result 6311 states and 8671 transitions. [2022-11-19 07:12:51,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:12:51,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 141 [2022-11-19 07:12:51,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:51,742 INFO L225 Difference]: With dead ends: 6311 [2022-11-19 07:12:51,743 INFO L226 Difference]: Without dead ends: 4117 [2022-11-19 07:12:51,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:51,751 INFO L413 NwaCegarLoop]: 1270 mSDtfsCounter, 673 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:51,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1991 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:12:51,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4117 states. [2022-11-19 07:12:52,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4117 to 4069. [2022-11-19 07:12:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4069 states, 3065 states have (on average 1.3252854812398043) internal successors, (4062), 3133 states have internal predecessors, (4062), 716 states have call successors, (716), 288 states have call predecessors, (716), 287 states have return successors, (829), 683 states have call predecessors, (829), 715 states have call successors, (829) [2022-11-19 07:12:52,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4069 states to 4069 states and 5607 transitions. [2022-11-19 07:12:52,329 INFO L78 Accepts]: Start accepts. Automaton has 4069 states and 5607 transitions. Word has length 141 [2022-11-19 07:12:52,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:52,329 INFO L495 AbstractCegarLoop]: Abstraction has 4069 states and 5607 transitions. [2022-11-19 07:12:52,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:12:52,331 INFO L276 IsEmpty]: Start isEmpty. Operand 4069 states and 5607 transitions. [2022-11-19 07:12:52,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-19 07:12:52,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:52,338 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 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] [2022-11-19 07:12:52,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:52,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:52,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:52,760 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:52,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:52,760 INFO L85 PathProgramCache]: Analyzing trace with hash -414372010, now seen corresponding path program 1 times [2022-11-19 07:12:52,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:52,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960292851] [2022-11-19 07:12:52,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:52,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:52,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:52,763 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:12:52,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-19 07:12:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:53,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:12:54,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:54,200 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-19 07:12:54,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:54,792 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-11-19 07:12:54,793 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:54,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960292851] [2022-11-19 07:12:54,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960292851] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:54,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [855789541] [2022-11-19 07:12:54,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:54,794 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:54,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:12:54,795 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:12:54,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-19 07:12:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:56,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:12:56,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-19 07:12:56,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:56,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [855789541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:56,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:12:56,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-19 07:12:56,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375038073] [2022-11-19 07:12:56,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:56,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:56,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:56,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:56,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:56,196 INFO L87 Difference]: Start difference. First operand 4069 states and 5607 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:12:58,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:59,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:59,250 INFO L93 Difference]: Finished difference Result 11383 states and 15673 transitions. [2022-11-19 07:12:59,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:12:59,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 256 [2022-11-19 07:12:59,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:59,292 INFO L225 Difference]: With dead ends: 11383 [2022-11-19 07:12:59,293 INFO L226 Difference]: Without dead ends: 7343 [2022-11-19 07:12:59,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:59,309 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 633 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:59,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1754 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-19 07:12:59,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7343 states. [2022-11-19 07:13:00,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7343 to 7309. [2022-11-19 07:13:00,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7309 states, 5521 states have (on average 1.3258467668900562) internal successors, (7320), 5641 states have internal predecessors, (7320), 1256 states have call successors, (1256), 532 states have call predecessors, (1256), 531 states have return successors, (1479), 1203 states have call predecessors, (1479), 1255 states have call successors, (1479) [2022-11-19 07:13:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7309 states to 7309 states and 10055 transitions. [2022-11-19 07:13:00,121 INFO L78 Accepts]: Start accepts. Automaton has 7309 states and 10055 transitions. Word has length 256 [2022-11-19 07:13:00,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:13:00,122 INFO L495 AbstractCegarLoop]: Abstraction has 7309 states and 10055 transitions. [2022-11-19 07:13:00,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:13:00,123 INFO L276 IsEmpty]: Start isEmpty. Operand 7309 states and 10055 transitions. [2022-11-19 07:13:00,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-11-19 07:13:00,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:13:00,136 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2022-11-19 07:13:00,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-19 07:13:00,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-19 07:13:00,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:13:00,559 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:13:00,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:13:00,559 INFO L85 PathProgramCache]: Analyzing trace with hash 698212048, now seen corresponding path program 1 times [2022-11-19 07:13:00,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:13:00,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652542768] [2022-11-19 07:13:00,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:00,561 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:13:00,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:13:00,562 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:13:00,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-19 07:13:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:13:01,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:13:01,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:13:02,145 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-19 07:13:02,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:13:02,698 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-19 07:13:02,698 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:13:02,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652542768] [2022-11-19 07:13:02,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652542768] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:13:02,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [549616656] [2022-11-19 07:13:02,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:02,699 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:13:02,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:13:02,711 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:13:02,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-19 07:13:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:13:04,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:13:04,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:13:04,228 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-19 07:13:04,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:13:04,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [549616656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:13:04,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:13:04,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-19 07:13:04,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775710870] [2022-11-19 07:13:04,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:13:04,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:13:04,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:13:04,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:13:04,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:13:04,232 INFO L87 Difference]: Start difference. First operand 7309 states and 10055 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:13:06,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:07,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:13:07,023 INFO L93 Difference]: Finished difference Result 15907 states and 22224 transitions. [2022-11-19 07:13:07,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:13:07,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 265 [2022-11-19 07:13:07,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:13:07,067 INFO L225 Difference]: With dead ends: 15907 [2022-11-19 07:13:07,067 INFO L226 Difference]: Without dead ends: 8627 [2022-11-19 07:13:07,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 785 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:13:07,091 INFO L413 NwaCegarLoop]: 946 mSDtfsCounter, 153 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:13:07,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1743 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2022-11-19 07:13:07,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8627 states. [2022-11-19 07:13:07,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8627 to 7389. [2022-11-19 07:13:07,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7389 states, 5601 states have (on average 1.3297625424031423) internal successors, (7448), 5721 states have internal predecessors, (7448), 1256 states have call successors, (1256), 532 states have call predecessors, (1256), 531 states have return successors, (1479), 1203 states have call predecessors, (1479), 1255 states have call successors, (1479) [2022-11-19 07:13:07,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7389 states to 7389 states and 10183 transitions. [2022-11-19 07:13:07,938 INFO L78 Accepts]: Start accepts. Automaton has 7389 states and 10183 transitions. Word has length 265 [2022-11-19 07:13:07,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:13:07,940 INFO L495 AbstractCegarLoop]: Abstraction has 7389 states and 10183 transitions. [2022-11-19 07:13:07,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:13:07,943 INFO L276 IsEmpty]: Start isEmpty. Operand 7389 states and 10183 transitions. [2022-11-19 07:13:07,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-19 07:13:07,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:13:07,956 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:13:07,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-19 07:13:08,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-19 07:13:08,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:13:08,376 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:13:08,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:13:08,376 INFO L85 PathProgramCache]: Analyzing trace with hash -998464280, now seen corresponding path program 1 times [2022-11-19 07:13:08,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:13:08,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391360402] [2022-11-19 07:13:08,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:08,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:13:08,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:13:08,380 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:13:08,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-19 07:13:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:13:09,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:13:09,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:13:10,002 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-11-19 07:13:10,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:13:10,600 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-11-19 07:13:10,600 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:13:10,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391360402] [2022-11-19 07:13:10,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391360402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:13:10,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [149746064] [2022-11-19 07:13:10,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:10,601 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:13:10,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:13:10,602 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:13:10,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-19 07:13:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:13:12,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:13:12,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:13:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-11-19 07:13:12,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:13:12,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [149746064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:13:12,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:13:12,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-19 07:13:12,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39998165] [2022-11-19 07:13:12,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:13:12,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:13:12,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:13:12,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:13:12,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:13:12,478 INFO L87 Difference]: Start difference. First operand 7389 states and 10183 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-19 07:13:14,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:15,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:13:15,500 INFO L93 Difference]: Finished difference Result 15617 states and 21554 transitions. [2022-11-19 07:13:15,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:13:15,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 272 [2022-11-19 07:13:15,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:13:15,537 INFO L225 Difference]: With dead ends: 15617 [2022-11-19 07:13:15,537 INFO L226 Difference]: Without dead ends: 8257 [2022-11-19 07:13:15,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 806 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:13:15,559 INFO L413 NwaCegarLoop]: 968 mSDtfsCounter, 210 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:13:15,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 1694 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 44 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-19 07:13:15,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8257 states. [2022-11-19 07:13:16,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8257 to 8209. [2022-11-19 07:13:16,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8209 states, 6287 states have (on average 1.3314776522983935) internal successors, (8371), 6415 states have internal predecessors, (8371), 1334 states have call successors, (1334), 588 states have call predecessors, (1334), 587 states have return successors, (1561), 1273 states have call predecessors, (1561), 1333 states have call successors, (1561) [2022-11-19 07:13:16,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8209 states to 8209 states and 11266 transitions. [2022-11-19 07:13:16,519 INFO L78 Accepts]: Start accepts. Automaton has 8209 states and 11266 transitions. Word has length 272 [2022-11-19 07:13:16,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:13:16,520 INFO L495 AbstractCegarLoop]: Abstraction has 8209 states and 11266 transitions. [2022-11-19 07:13:16,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-19 07:13:16,521 INFO L276 IsEmpty]: Start isEmpty. Operand 8209 states and 11266 transitions. [2022-11-19 07:13:16,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-11-19 07:13:16,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:13:16,533 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2022-11-19 07:13:16,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-19 07:13:16,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-11-19 07:13:16,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:13:16,955 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:13:16,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:13:16,955 INFO L85 PathProgramCache]: Analyzing trace with hash 714995948, now seen corresponding path program 1 times [2022-11-19 07:13:16,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:13:16,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672093925] [2022-11-19 07:13:16,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:16,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:13:16,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:13:16,960 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:13:16,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-19 07:13:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:13:18,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 1558 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:13:18,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:13:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-11-19 07:13:18,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:13:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-11-19 07:13:19,366 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:13:19,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672093925] [2022-11-19 07:13:19,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672093925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:13:19,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [120297387] [2022-11-19 07:13:19,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:19,367 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:13:19,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:13:19,368 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:13:19,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-11-19 07:13:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:13:20,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 1558 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:13:20,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:13:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-19 07:13:21,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:13:21,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [120297387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:13:21,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:13:21,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-19 07:13:21,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165825463] [2022-11-19 07:13:21,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:13:21,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:13:21,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:13:21,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:13:21,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:13:21,104 INFO L87 Difference]: Start difference. First operand 8209 states and 11266 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-19 07:13:23,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:25,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:27,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:13:27,157 INFO L93 Difference]: Finished difference Result 26111 states and 36169 transitions. [2022-11-19 07:13:27,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:13:27,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 286 [2022-11-19 07:13:27,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:13:27,230 INFO L225 Difference]: With dead ends: 26111 [2022-11-19 07:13:27,230 INFO L226 Difference]: Without dead ends: 17931 [2022-11-19 07:13:27,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 857 GetRequests, 848 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:13:27,254 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 1022 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 45 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:13:27,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 2639 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 36 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2022-11-19 07:13:27,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17931 states. [2022-11-19 07:13:29,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17931 to 16297. [2022-11-19 07:13:29,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16297 states, 12481 states have (on average 1.3325855300056084) internal successors, (16632), 12741 states have internal predecessors, (16632), 2652 states have call successors, (2652), 1164 states have call predecessors, (2652), 1163 states have return successors, (3107), 2527 states have call predecessors, (3107), 2651 states have call successors, (3107) [2022-11-19 07:13:29,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16297 states to 16297 states and 22391 transitions. [2022-11-19 07:13:29,400 INFO L78 Accepts]: Start accepts. Automaton has 16297 states and 22391 transitions. Word has length 286 [2022-11-19 07:13:29,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:13:29,400 INFO L495 AbstractCegarLoop]: Abstraction has 16297 states and 22391 transitions. [2022-11-19 07:13:29,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-19 07:13:29,401 INFO L276 IsEmpty]: Start isEmpty. Operand 16297 states and 22391 transitions. [2022-11-19 07:13:29,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-11-19 07:13:29,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:13:29,413 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2022-11-19 07:13:29,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-19 07:13:29,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2022-11-19 07:13:29,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:13:29,827 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:13:29,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:13:29,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1207622122, now seen corresponding path program 1 times [2022-11-19 07:13:29,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:13:29,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256493806] [2022-11-19 07:13:29,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:29,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:13:29,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:13:29,831 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:13:29,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-19 07:13:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:13:31,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 1560 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:13:31,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:13:31,539 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-11-19 07:13:31,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:13:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-11-19 07:13:32,087 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:13:32,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256493806] [2022-11-19 07:13:32,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256493806] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:13:32,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1238238562] [2022-11-19 07:13:32,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:32,088 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:13:32,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:13:32,091 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:13:32,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-11-19 07:13:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:13:33,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 1560 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:13:33,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:13:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2022-11-19 07:13:33,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:13:33,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1238238562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:13:33,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:13:33,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-19 07:13:33,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246798127] [2022-11-19 07:13:33,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:13:33,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:13:33,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:13:33,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:13:33,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:13:33,852 INFO L87 Difference]: Start difference. First operand 16297 states and 22391 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-19 07:13:35,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:37,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:13:37,954 INFO L93 Difference]: Finished difference Result 39381 states and 54101 transitions. [2022-11-19 07:13:37,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:13:37,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 286 [2022-11-19 07:13:37,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:13:38,056 INFO L225 Difference]: With dead ends: 39381 [2022-11-19 07:13:38,057 INFO L226 Difference]: Without dead ends: 23113 [2022-11-19 07:13:38,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 855 GetRequests, 848 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:13:38,098 INFO L413 NwaCegarLoop]: 1134 mSDtfsCounter, 659 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:13:38,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 1875 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-19 07:13:38,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23113 states. [2022-11-19 07:13:40,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23113 to 22973. [2022-11-19 07:13:40,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22973 states, 17665 states have (on average 1.3299745258986697) internal successors, (23494), 18021 states have internal predecessors, (23494), 3616 states have call successors, (3616), 1692 states have call predecessors, (3616), 1691 states have return successors, (4303), 3443 states have call predecessors, (4303), 3615 states have call successors, (4303) [2022-11-19 07:13:40,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22973 states to 22973 states and 31413 transitions. [2022-11-19 07:13:40,848 INFO L78 Accepts]: Start accepts. Automaton has 22973 states and 31413 transitions. Word has length 286 [2022-11-19 07:13:40,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:13:40,849 INFO L495 AbstractCegarLoop]: Abstraction has 22973 states and 31413 transitions. [2022-11-19 07:13:40,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-19 07:13:40,849 INFO L276 IsEmpty]: Start isEmpty. Operand 22973 states and 31413 transitions. [2022-11-19 07:13:40,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-11-19 07:13:40,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:13:40,866 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:13:40,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2022-11-19 07:13:41,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-19 07:13:41,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:13:41,282 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:13:41,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:13:41,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1156928269, now seen corresponding path program 1 times [2022-11-19 07:13:41,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:13:41,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056713733] [2022-11-19 07:13:41,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:41,285 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:13:41,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:13:41,286 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:13:41,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-19 07:13:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:13:42,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:13:42,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:13:43,158 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-11-19 07:13:43,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:13:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-11-19 07:13:43,717 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:13:43,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056713733] [2022-11-19 07:13:43,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056713733] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:13:43,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1822482372] [2022-11-19 07:13:43,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:43,718 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:13:43,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:13:43,720 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:13:43,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-11-19 07:13:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:13:45,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:13:45,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:13:45,636 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2022-11-19 07:13:45,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:13:45,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1822482372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:13:45,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:13:45,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-19 07:13:45,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244848666] [2022-11-19 07:13:45,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:13:45,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:13:45,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:13:45,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:13:45,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:13:45,639 INFO L87 Difference]: Start difference. First operand 22973 states and 31413 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:13:47,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:51,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:13:51,791 INFO L93 Difference]: Finished difference Result 65035 states and 89121 transitions. [2022-11-19 07:13:51,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:13:51,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 309 [2022-11-19 07:13:51,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:13:51,976 INFO L225 Difference]: With dead ends: 65035 [2022-11-19 07:13:51,977 INFO L226 Difference]: Without dead ends: 42091 [2022-11-19 07:13:52,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 926 GetRequests, 917 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:13:52,036 INFO L413 NwaCegarLoop]: 1483 mSDtfsCounter, 1052 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 52 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 3733 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:13:52,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 3733 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-19 07:13:52,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42091 states. [2022-11-19 07:13:56,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42091 to 38449. [2022-11-19 07:13:56,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38449 states, 29609 states have (on average 1.3267587557837144) internal successors, (39284), 30273 states have internal predecessors, (39284), 5988 states have call successors, (5988), 2852 states have call predecessors, (5988), 2851 states have return successors, (7067), 5611 states have call predecessors, (7067), 5987 states have call successors, (7067) [2022-11-19 07:13:56,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38449 states to 38449 states and 52339 transitions. [2022-11-19 07:13:56,641 INFO L78 Accepts]: Start accepts. Automaton has 38449 states and 52339 transitions. Word has length 309 [2022-11-19 07:13:56,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:13:56,642 INFO L495 AbstractCegarLoop]: Abstraction has 38449 states and 52339 transitions. [2022-11-19 07:13:56,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:13:56,643 INFO L276 IsEmpty]: Start isEmpty. Operand 38449 states and 52339 transitions. [2022-11-19 07:13:56,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-11-19 07:13:56,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:13:56,676 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:13:56,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-19 07:13:56,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2022-11-19 07:13:57,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:13:57,099 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:13:57,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:13:57,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1116949080, now seen corresponding path program 1 times [2022-11-19 07:13:57,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:13:57,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418048003] [2022-11-19 07:13:57,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:57,101 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:13:57,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:13:57,102 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:13:57,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-19 07:13:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:13:58,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:13:58,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:13:58,919 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-11-19 07:13:58,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:13:59,561 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-11-19 07:13:59,561 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:13:59,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418048003] [2022-11-19 07:13:59,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418048003] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:13:59,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1360517995] [2022-11-19 07:13:59,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:59,562 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:13:59,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:13:59,564 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:13:59,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41a8e49b-367f-4eae-b7cf-315f4d8054e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2022-11-19 07:14:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:01,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:14:01,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:14:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-11-19 07:14:01,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:14:01,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1360517995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:14:01,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:14:01,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2022-11-19 07:14:01,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254043347] [2022-11-19 07:14:01,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:14:01,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:14:01,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:14:01,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:14:01,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:14:01,840 INFO L87 Difference]: Start difference. First operand 38449 states and 52339 transitions. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 07:14:03,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:14:05,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:14:10,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:10,093 INFO L93 Difference]: Finished difference Result 77173 states and 105340 transitions. [2022-11-19 07:14:10,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:14:10,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 325 [2022-11-19 07:14:10,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:10,266 INFO L225 Difference]: With dead ends: 77173 [2022-11-19 07:14:10,266 INFO L226 Difference]: Without dead ends: 38641 [2022-11-19 07:14:10,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 972 GetRequests, 963 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:14:10,352 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 0 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:14:10,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3107 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 2 Unknown, 0 Unchecked, 4.1s Time] [2022-11-19 07:14:10,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38641 states.