./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 57ba9a4d546a973620a0029f54a814a104db676a0fd0f250dd5545a7c0f94302 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:53:39,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:53:39,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:53:39,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:53:39,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:53:39,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:53:39,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:53:39,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:53:39,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:53:39,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:53:39,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:53:39,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:53:39,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:53:39,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:53:39,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:53:39,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:53:39,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:53:39,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:53:39,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:53:39,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:53:39,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:53:39,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:53:39,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:53:39,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:53:39,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:53:39,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:53:39,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:53:39,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:53:39,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:53:39,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:53:39,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:53:39,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:53:39,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:53:39,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:53:39,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:53:39,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:53:39,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:53:39,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:53:39,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:53:39,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:53:39,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:53:39,274 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:53:39,298 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:53:39,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:53:39,299 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:53:39,299 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:53:39,300 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:53:39,300 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:53:39,300 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:53:39,301 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:53:39,301 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:53:39,301 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:53:39,301 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:53:39,302 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:53:39,302 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:53:39,302 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:53:39,302 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:53:39,303 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:53:39,303 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:53:39,303 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:53:39,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:53:39,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:53:39,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:53:39,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:53:39,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:53:39,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:53:39,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:53:39,306 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:53:39,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:53:39,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:53:39,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:53:39,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:53:39,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:53:39,307 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:53:39,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:53:39,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:53:39,308 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:53:39,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:53:39,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:53:39,308 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:53:39,309 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_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57ba9a4d546a973620a0029f54a814a104db676a0fd0f250dd5545a7c0f94302 [2022-11-03 03:53:39,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:53:39,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:53:39,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:53:39,659 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:53:39,660 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:53:39,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i [2022-11-03 03:53:39,740 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/data/1cf520fea/03c74736684a4628bc00d4af7cad6d98/FLAG0d2abb9ce [2022-11-03 03:53:40,473 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:53:40,473 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i [2022-11-03 03:53:40,506 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/data/1cf520fea/03c74736684a4628bc00d4af7cad6d98/FLAG0d2abb9ce [2022-11-03 03:53:40,687 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/data/1cf520fea/03c74736684a4628bc00d4af7cad6d98 [2022-11-03 03:53:40,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:53:40,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:53:40,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:53:40,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:53:40,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:53:40,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:53:40" (1/1) ... [2022-11-03 03:53:40,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b97c53d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:40, skipping insertion in model container [2022-11-03 03:53:40,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:53:40" (1/1) ... [2022-11-03 03:53:40,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:53:40,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:53:41,461 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i[101600,101613] [2022-11-03 03:53:41,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:53:41,759 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:53:41,892 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i[101600,101613] [2022-11-03 03:53:41,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:53:41,966 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:53:41,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:41 WrapperNode [2022-11-03 03:53:41,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:53:41,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:53:41,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:53:41,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:53:41,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:41" (1/1) ... [2022-11-03 03:53:42,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:41" (1/1) ... [2022-11-03 03:53:42,068 INFO L138 Inliner]: procedures = 113, calls = 417, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 1227 [2022-11-03 03:53:42,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:53:42,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:53:42,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:53:42,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:53:42,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:41" (1/1) ... [2022-11-03 03:53:42,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:41" (1/1) ... [2022-11-03 03:53:42,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:41" (1/1) ... [2022-11-03 03:53:42,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:41" (1/1) ... [2022-11-03 03:53:42,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:41" (1/1) ... [2022-11-03 03:53:42,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:41" (1/1) ... [2022-11-03 03:53:42,235 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:41" (1/1) ... [2022-11-03 03:53:42,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:41" (1/1) ... [2022-11-03 03:53:42,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:53:42,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:53:42,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:53:42,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:53:42,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:41" (1/1) ... [2022-11-03 03:53:42,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:53:42,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:53:42,315 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:53:42,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:53:42,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:53:42,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:53:42,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:53:42,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:53:42,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:53:42,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:53:42,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:53:42,363 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:53:42,364 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 03:53:42,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 03:53:42,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:53:42,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:53:42,364 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:53:42,365 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:53:42,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:53:42,365 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 03:53:42,365 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 03:53:42,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:53:42,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:53:42,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:53:42,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:53:42,366 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:53:42,366 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:53:42,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:53:42,367 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_resume [2022-11-03 03:53:42,367 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_resume [2022-11-03 03:53:42,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-11-03 03:53:42,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-11-03 03:53:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_2 [2022-11-03 03:53:42,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_2 [2022-11-03 03:53:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:53:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:53:42,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:53:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:53:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:53:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 03:53:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_5 [2022-11-03 03:53:42,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_5 [2022-11-03 03:53:42,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:53:42,370 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-03 03:53:42,370 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-03 03:53:42,370 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_disconnect [2022-11-03 03:53:42,371 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_disconnect [2022-11-03 03:53:42,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:53:42,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:53:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_delete [2022-11-03 03:53:42,372 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_delete [2022-11-03 03:53:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:53:42,373 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:53:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 03:53:42,374 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 03:53:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:53:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:53:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 03:53:42,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 03:53:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:53:42,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:53:42,876 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:53:42,880 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:53:43,000 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:53:43,238 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-11-03 03:53:44,136 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:53:44,320 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:53:44,320 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:53:44,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:53:44 BoogieIcfgContainer [2022-11-03 03:53:44,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:53:44,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:53:44,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:53:44,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:53:44,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:53:40" (1/3) ... [2022-11-03 03:53:44,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df52611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:53:44, skipping insertion in model container [2022-11-03 03:53:44,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:41" (2/3) ... [2022-11-03 03:53:44,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df52611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:53:44, skipping insertion in model container [2022-11-03 03:53:44,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:53:44" (3/3) ... [2022-11-03 03:53:44,333 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i [2022-11-03 03:53:44,352 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:53:44,352 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:53:44,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:53:44,412 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;@61203556, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:53:44,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:53:44,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 276 states, 174 states have (on average 1.4482758620689655) internal successors, (252), 189 states have internal predecessors, (252), 82 states have call successors, (82), 20 states have call predecessors, (82), 18 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2022-11-03 03:53:44,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 03:53:44,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:44,428 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:44,429 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:44,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:44,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1559803666, now seen corresponding path program 1 times [2022-11-03 03:53:44,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:44,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501879265] [2022-11-03 03:53:44,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:44,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:45,001 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:53:45,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:45,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501879265] [2022-11-03 03:53:45,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501879265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:45,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:45,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:53:45,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447942679] [2022-11-03 03:53:45,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:45,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:53:45,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:45,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:53:45,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:45,073 INFO L87 Difference]: Start difference. First operand has 276 states, 174 states have (on average 1.4482758620689655) internal successors, (252), 189 states have internal predecessors, (252), 82 states have call successors, (82), 20 states have call predecessors, (82), 18 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:53:45,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:45,532 INFO L93 Difference]: Finished difference Result 790 states and 1173 transitions. [2022-11-03 03:53:45,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:45,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2022-11-03 03:53:45,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:45,569 INFO L225 Difference]: With dead ends: 790 [2022-11-03 03:53:45,570 INFO L226 Difference]: Without dead ends: 504 [2022-11-03 03:53:45,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:45,586 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 358 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:45,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 767 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:53:45,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-11-03 03:53:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 501. [2022-11-03 03:53:45,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 326 states have (on average 1.401840490797546) internal successors, (457), 335 states have internal predecessors, (457), 140 states have call successors, (140), 35 states have call predecessors, (140), 34 states have return successors, (134), 130 states have call predecessors, (134), 134 states have call successors, (134) [2022-11-03 03:53:45,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 731 transitions. [2022-11-03 03:53:45,677 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 731 transitions. Word has length 30 [2022-11-03 03:53:45,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:45,677 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 731 transitions. [2022-11-03 03:53:45,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:53:45,678 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 731 transitions. [2022-11-03 03:53:45,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-03 03:53:45,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:45,681 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:45,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:53:45,681 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:45,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:45,682 INFO L85 PathProgramCache]: Analyzing trace with hash 52553193, now seen corresponding path program 1 times [2022-11-03 03:53:45,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:45,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871072247] [2022-11-03 03:53:45,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:45,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:53:46,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:46,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871072247] [2022-11-03 03:53:46,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871072247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:46,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:46,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:53:46,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339589214] [2022-11-03 03:53:46,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:46,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:53:46,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:46,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:53:46,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:46,047 INFO L87 Difference]: Start difference. First operand 501 states and 731 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:53:46,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:46,244 INFO L93 Difference]: Finished difference Result 503 states and 732 transitions. [2022-11-03 03:53:46,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:46,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 39 [2022-11-03 03:53:46,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:46,253 INFO L225 Difference]: With dead ends: 503 [2022-11-03 03:53:46,253 INFO L226 Difference]: Without dead ends: 500 [2022-11-03 03:53:46,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:46,259 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 365 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:46,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 336 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:46,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-11-03 03:53:46,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2022-11-03 03:53:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 326 states have (on average 1.3987730061349692) internal successors, (456), 334 states have internal predecessors, (456), 139 states have call successors, (139), 35 states have call predecessors, (139), 34 states have return successors, (134), 130 states have call predecessors, (134), 134 states have call successors, (134) [2022-11-03 03:53:46,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 729 transitions. [2022-11-03 03:53:46,358 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 729 transitions. Word has length 39 [2022-11-03 03:53:46,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:46,359 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 729 transitions. [2022-11-03 03:53:46,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:53:46,360 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 729 transitions. [2022-11-03 03:53:46,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 03:53:46,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:46,368 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:46,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:53:46,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:46,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:46,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1628939930, now seen corresponding path program 1 times [2022-11-03 03:53:46,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:46,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212867019] [2022-11-03 03:53:46,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:46,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:46,761 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:53:46,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:46,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212867019] [2022-11-03 03:53:46,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212867019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:46,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:46,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:53:46,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552450075] [2022-11-03 03:53:46,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:46,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:53:46,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:46,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:53:46,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:46,766 INFO L87 Difference]: Start difference. First operand 500 states and 729 transitions. 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:53:46,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:46,930 INFO L93 Difference]: Finished difference Result 502 states and 730 transitions. [2022-11-03 03:53:46,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:46,931 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2022-11-03 03:53:46,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:46,936 INFO L225 Difference]: With dead ends: 502 [2022-11-03 03:53:46,937 INFO L226 Difference]: Without dead ends: 499 [2022-11-03 03:53:46,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:46,940 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 362 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:46,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 334 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:46,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-11-03 03:53:46,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2022-11-03 03:53:46,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 326 states have (on average 1.3957055214723926) internal successors, (455), 333 states have internal predecessors, (455), 138 states have call successors, (138), 35 states have call predecessors, (138), 34 states have return successors, (134), 130 states have call predecessors, (134), 134 states have call successors, (134) [2022-11-03 03:53:46,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 727 transitions. [2022-11-03 03:53:47,000 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 727 transitions. Word has length 40 [2022-11-03 03:53:47,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:47,002 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 727 transitions. [2022-11-03 03:53:47,002 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:53:47,003 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 727 transitions. [2022-11-03 03:53:47,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 03:53:47,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:47,009 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:47,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:53:47,013 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:47,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:47,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1042673908, now seen corresponding path program 1 times [2022-11-03 03:53:47,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:47,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007120377] [2022-11-03 03:53:47,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:47,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:47,123 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:53:47,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:47,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007120377] [2022-11-03 03:53:47,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007120377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:47,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:47,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:53:47,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984968467] [2022-11-03 03:53:47,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:47,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:53:47,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:47,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:53:47,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:47,125 INFO L87 Difference]: Start difference. First operand 499 states and 727 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:53:47,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:47,287 INFO L93 Difference]: Finished difference Result 501 states and 728 transitions. [2022-11-03 03:53:47,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:47,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2022-11-03 03:53:47,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:47,294 INFO L225 Difference]: With dead ends: 501 [2022-11-03 03:53:47,295 INFO L226 Difference]: Without dead ends: 498 [2022-11-03 03:53:47,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:47,297 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 359 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:47,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 332 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:47,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2022-11-03 03:53:47,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 498. [2022-11-03 03:53:47,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 326 states have (on average 1.392638036809816) internal successors, (454), 332 states have internal predecessors, (454), 137 states have call successors, (137), 35 states have call predecessors, (137), 34 states have return successors, (134), 130 states have call predecessors, (134), 134 states have call successors, (134) [2022-11-03 03:53:47,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 725 transitions. [2022-11-03 03:53:47,362 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 725 transitions. Word has length 41 [2022-11-03 03:53:47,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:47,364 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 725 transitions. [2022-11-03 03:53:47,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:53:47,365 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 725 transitions. [2022-11-03 03:53:47,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 03:53:47,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:47,367 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:47,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:53:47,367 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:47,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:47,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2036647901, now seen corresponding path program 1 times [2022-11-03 03:53:47,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:47,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262597996] [2022-11-03 03:53:47,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:47,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:47,516 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:53:47,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:47,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262597996] [2022-11-03 03:53:47,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262597996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:47,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:47,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:53:47,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327848113] [2022-11-03 03:53:47,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:47,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:53:47,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:47,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:53:47,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:47,519 INFO L87 Difference]: Start difference. First operand 498 states and 725 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:53:47,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:47,787 INFO L93 Difference]: Finished difference Result 849 states and 1230 transitions. [2022-11-03 03:53:47,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:47,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2022-11-03 03:53:47,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:47,793 INFO L225 Difference]: With dead ends: 849 [2022-11-03 03:53:47,793 INFO L226 Difference]: Without dead ends: 846 [2022-11-03 03:53:47,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:47,794 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 251 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:47,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 699 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:53:47,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-11-03 03:53:47,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 832. [2022-11-03 03:53:47,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 545 states have (on average 1.3963302752293578) internal successors, (761), 555 states have internal predecessors, (761), 228 states have call successors, (228), 59 states have call predecessors, (228), 58 states have return successors, (225), 217 states have call predecessors, (225), 225 states have call successors, (225) [2022-11-03 03:53:47,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1214 transitions. [2022-11-03 03:53:47,875 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1214 transitions. Word has length 42 [2022-11-03 03:53:47,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:47,877 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1214 transitions. [2022-11-03 03:53:47,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:53:47,877 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1214 transitions. [2022-11-03 03:53:47,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-03 03:53:47,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:47,878 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:47,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:53:47,879 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:47,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:47,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1288618961, now seen corresponding path program 1 times [2022-11-03 03:53:47,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:47,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594338384] [2022-11-03 03:53:47,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:47,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:48,028 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:53:48,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:48,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594338384] [2022-11-03 03:53:48,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594338384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:48,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:48,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:53:48,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225714595] [2022-11-03 03:53:48,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:48,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:53:48,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:48,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:53:48,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:48,031 INFO L87 Difference]: Start difference. First operand 832 states and 1214 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:53:48,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:48,205 INFO L93 Difference]: Finished difference Result 834 states and 1215 transitions. [2022-11-03 03:53:48,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:48,206 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2022-11-03 03:53:48,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:48,211 INFO L225 Difference]: With dead ends: 834 [2022-11-03 03:53:48,211 INFO L226 Difference]: Without dead ends: 825 [2022-11-03 03:53:48,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:48,214 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 355 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:48,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 331 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:48,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-11-03 03:53:48,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 825. [2022-11-03 03:53:48,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 539 states have (on average 1.3933209647495362) internal successors, (751), 548 states have internal predecessors, (751), 227 states have call successors, (227), 59 states have call predecessors, (227), 58 states have return successors, (225), 217 states have call predecessors, (225), 225 states have call successors, (225) [2022-11-03 03:53:48,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1203 transitions. [2022-11-03 03:53:48,327 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1203 transitions. Word has length 43 [2022-11-03 03:53:48,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:48,327 INFO L495 AbstractCegarLoop]: Abstraction has 825 states and 1203 transitions. [2022-11-03 03:53:48,328 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:53:48,328 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1203 transitions. [2022-11-03 03:53:48,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 03:53:48,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:48,331 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:48,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:53:48,331 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:48,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:48,332 INFO L85 PathProgramCache]: Analyzing trace with hash 185829655, now seen corresponding path program 1 times [2022-11-03 03:53:48,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:48,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604821935] [2022-11-03 03:53:48,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:48,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 03:53:48,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:48,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604821935] [2022-11-03 03:53:48,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604821935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:48,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:48,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:53:48,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673998045] [2022-11-03 03:53:48,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:48,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:53:48,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:48,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:53:48,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:48,532 INFO L87 Difference]: Start difference. First operand 825 states and 1203 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:53:48,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:48,820 INFO L93 Difference]: Finished difference Result 2096 states and 3016 transitions. [2022-11-03 03:53:48,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:48,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2022-11-03 03:53:48,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:48,827 INFO L225 Difference]: With dead ends: 2096 [2022-11-03 03:53:48,828 INFO L226 Difference]: Without dead ends: 1279 [2022-11-03 03:53:48,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:48,832 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 172 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:48,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 676 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:53:48,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-11-03 03:53:48,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1271. [2022-11-03 03:53:48,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 837 states have (on average 1.3859020310633214) internal successors, (1160), 850 states have internal predecessors, (1160), 328 states have call successors, (328), 106 states have call predecessors, (328), 105 states have return successors, (326), 314 states have call predecessors, (326), 326 states have call successors, (326) [2022-11-03 03:53:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1814 transitions. [2022-11-03 03:53:49,008 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1814 transitions. Word has length 87 [2022-11-03 03:53:49,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:49,009 INFO L495 AbstractCegarLoop]: Abstraction has 1271 states and 1814 transitions. [2022-11-03 03:53:49,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:53:49,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1814 transitions. [2022-11-03 03:53:49,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-03 03:53:49,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:49,014 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:49,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:53:49,015 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:49,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:49,015 INFO L85 PathProgramCache]: Analyzing trace with hash 673434927, now seen corresponding path program 1 times [2022-11-03 03:53:49,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:49,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651301480] [2022-11-03 03:53:49,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:49,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 03:53:49,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:49,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651301480] [2022-11-03 03:53:49,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651301480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:49,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:49,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:53:49,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114905036] [2022-11-03 03:53:49,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:49,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:53:49,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:49,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:53:49,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:53:49,503 INFO L87 Difference]: Start difference. First operand 1271 states and 1814 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 03:53:49,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:49,985 INFO L93 Difference]: Finished difference Result 3208 states and 4714 transitions. [2022-11-03 03:53:49,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:53:49,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2022-11-03 03:53:49,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:49,995 INFO L225 Difference]: With dead ends: 3208 [2022-11-03 03:53:49,995 INFO L226 Difference]: Without dead ends: 1951 [2022-11-03 03:53:49,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:53:50,000 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 121 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:50,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 1808 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:53:50,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2022-11-03 03:53:50,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1287. [2022-11-03 03:53:50,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 849 states have (on average 1.380447585394582) internal successors, (1172), 862 states have internal predecessors, (1172), 328 states have call successors, (328), 106 states have call predecessors, (328), 109 states have return successors, (338), 318 states have call predecessors, (338), 326 states have call successors, (338) [2022-11-03 03:53:50,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1838 transitions. [2022-11-03 03:53:50,136 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1838 transitions. Word has length 105 [2022-11-03 03:53:50,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:50,137 INFO L495 AbstractCegarLoop]: Abstraction has 1287 states and 1838 transitions. [2022-11-03 03:53:50,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 03:53:50,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1838 transitions. [2022-11-03 03:53:50,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 03:53:50,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:50,141 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:50,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:53:50,141 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:50,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:50,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1522578336, now seen corresponding path program 1 times [2022-11-03 03:53:50,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:50,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101176884] [2022-11-03 03:53:50,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:50,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:50,847 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 03:53:50,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:50,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101176884] [2022-11-03 03:53:50,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101176884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:50,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:50,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:50,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127956528] [2022-11-03 03:53:50,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:50,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:53:50,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:50,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:53:50,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:50,849 INFO L87 Difference]: Start difference. First operand 1287 states and 1838 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 03:53:51,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:51,843 INFO L93 Difference]: Finished difference Result 3653 states and 5341 transitions. [2022-11-03 03:53:51,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:53:51,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 109 [2022-11-03 03:53:51,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:51,855 INFO L225 Difference]: With dead ends: 3653 [2022-11-03 03:53:51,855 INFO L226 Difference]: Without dead ends: 2380 [2022-11-03 03:53:51,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:53:51,860 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 420 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:51,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 2333 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:53:51,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2022-11-03 03:53:52,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 1748. [2022-11-03 03:53:52,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1172 states have (on average 1.3839590443686007) internal successors, (1622), 1195 states have internal predecessors, (1622), 427 states have call successors, (427), 147 states have call predecessors, (427), 148 states have return successors, (443), 405 states have call predecessors, (443), 425 states have call successors, (443) [2022-11-03 03:53:52,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2492 transitions. [2022-11-03 03:53:52,110 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2492 transitions. Word has length 109 [2022-11-03 03:53:52,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:52,110 INFO L495 AbstractCegarLoop]: Abstraction has 1748 states and 2492 transitions. [2022-11-03 03:53:52,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 03:53:52,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2492 transitions. [2022-11-03 03:53:52,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-03 03:53:52,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:52,118 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:52,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:53:52,118 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:52,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:52,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1880436643, now seen corresponding path program 1 times [2022-11-03 03:53:52,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:52,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710316816] [2022-11-03 03:53:52,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:52,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 03:53:52,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:52,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710316816] [2022-11-03 03:53:52,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710316816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:52,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:52,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:53:52,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025572285] [2022-11-03 03:53:52,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:52,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:53:52,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:52,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:53:52,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:52,329 INFO L87 Difference]: Start difference. First operand 1748 states and 2492 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 03:53:52,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:52,785 INFO L93 Difference]: Finished difference Result 4453 states and 6376 transitions. [2022-11-03 03:53:52,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:52,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 143 [2022-11-03 03:53:52,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:52,799 INFO L225 Difference]: With dead ends: 4453 [2022-11-03 03:53:52,799 INFO L226 Difference]: Without dead ends: 2719 [2022-11-03 03:53:52,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:52,804 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 305 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:52,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 778 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:53:52,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2719 states. [2022-11-03 03:53:53,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2719 to 2704. [2022-11-03 03:53:53,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2704 states, 1879 states have (on average 1.379989356040447) internal successors, (2593), 1908 states have internal predecessors, (2593), 601 states have call successors, (601), 216 states have call predecessors, (601), 223 states have return successors, (623), 579 states have call predecessors, (623), 599 states have call successors, (623) [2022-11-03 03:53:53,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2704 states to 2704 states and 3817 transitions. [2022-11-03 03:53:53,123 INFO L78 Accepts]: Start accepts. Automaton has 2704 states and 3817 transitions. Word has length 143 [2022-11-03 03:53:53,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:53,123 INFO L495 AbstractCegarLoop]: Abstraction has 2704 states and 3817 transitions. [2022-11-03 03:53:53,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 03:53:53,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2704 states and 3817 transitions. [2022-11-03 03:53:53,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-03 03:53:53,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:53,134 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:53,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:53:53,134 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:53,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:53,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1214239229, now seen corresponding path program 2 times [2022-11-03 03:53:53,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:53,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844898095] [2022-11-03 03:53:53,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:53,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:53,274 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-03 03:53:53,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:53,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844898095] [2022-11-03 03:53:53,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844898095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:53,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:53,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:53:53,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754128646] [2022-11-03 03:53:53,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:53,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:53:53,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:53,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:53:53,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:53,277 INFO L87 Difference]: Start difference. First operand 2704 states and 3817 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:53:53,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:53,811 INFO L93 Difference]: Finished difference Result 6169 states and 8720 transitions. [2022-11-03 03:53:53,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:53,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 143 [2022-11-03 03:53:53,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:53,828 INFO L225 Difference]: With dead ends: 6169 [2022-11-03 03:53:53,828 INFO L226 Difference]: Without dead ends: 3481 [2022-11-03 03:53:53,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:53,836 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 255 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:53,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 739 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:53:53,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3481 states. [2022-11-03 03:53:54,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3481 to 3466. [2022-11-03 03:53:54,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3466 states, 2417 states have (on average 1.3798096814232519) internal successors, (3335), 2452 states have internal predecessors, (3335), 767 states have call successors, (767), 268 states have call predecessors, (767), 281 states have return successors, (795), 745 states have call predecessors, (795), 765 states have call successors, (795) [2022-11-03 03:53:54,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 4897 transitions. [2022-11-03 03:53:54,208 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 4897 transitions. Word has length 143 [2022-11-03 03:53:54,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:54,208 INFO L495 AbstractCegarLoop]: Abstraction has 3466 states and 4897 transitions. [2022-11-03 03:53:54,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:53:54,209 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 4897 transitions. [2022-11-03 03:53:54,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-03 03:53:54,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:54,218 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:54,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:53:54,218 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:54,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:54,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1288017192, now seen corresponding path program 1 times [2022-11-03 03:53:54,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:54,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363865709] [2022-11-03 03:53:54,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:54,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:54,857 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-03 03:53:54,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:54,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363865709] [2022-11-03 03:53:54,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363865709] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:53:54,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814639322] [2022-11-03 03:53:54,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:54,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:54,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:53:54,865 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:53:54,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:53:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:55,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 1633 conjuncts, 92 conjunts are in the unsatisfiable core [2022-11-03 03:53:55,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:56,247 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-03 03:53:56,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:53:57,086 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-03 03:53:57,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814639322] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:53:57,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [670876045] [2022-11-03 03:53:57,117 INFO L159 IcfgInterpreter]: Started Sifa with 102 locations of interest [2022-11-03 03:53:57,117 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:53:57,122 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:53:57,127 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:53:57,129 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:53:58,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:53:59,885 INFO L356 Elim1Store]: treesize reduction 450, result has 33.4 percent of original size [2022-11-03 03:53:59,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 28 select indices, 28 select index equivalence classes, 353 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 50 case distinctions, treesize of input 147 treesize of output 325 [2022-11-03 03:54:00,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:00,227 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 26 select indices, 26 select index equivalence classes, 352 disjoint index pairs (out of 325 index pairs), introduced 26 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 214 [2022-11-03 03:54:02,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 27 select indices, 27 select index equivalence classes, 352 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 82 [2022-11-03 03:54:02,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:02,849 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 61 select indices, 61 select index equivalence classes, 835 disjoint index pairs (out of 1830 index pairs), introduced 61 new quantified variables, introduced 0 case distinctions, treesize of input 542 treesize of output 184 [2022-11-03 03:54:03,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:03,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 28 select indices, 28 select index equivalence classes, 378 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 85 [2022-11-03 03:54:04,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:04,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:04,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:04,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:04,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,089 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 61 select indices, 61 select index equivalence classes, 835 disjoint index pairs (out of 1830 index pairs), introduced 61 new quantified variables, introduced 0 case distinctions, treesize of input 542 treesize of output 184 [2022-11-03 03:54:05,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 27 select indices, 27 select index equivalence classes, 352 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 82 [2022-11-03 03:54:05,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:54:05,428 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 28 select indices, 28 select index equivalence classes, 378 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 85 [2022-11-03 03:54:12,596 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 130 for LOIs [2022-11-03 03:54:12,689 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:54:26,553 WARN L234 SmtUtils]: Spent 13.26s on a formula simplification. DAG size of input: 984 DAG size of output: 932 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:54:34,521 WARN L234 SmtUtils]: Spent 6.63s on a formula simplification. DAG size of input: 652 DAG size of output: 649 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:54:41,631 WARN L234 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 656 DAG size of output: 653 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:54:48,888 WARN L234 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 664 DAG size of output: 658 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:54:56,746 WARN L234 SmtUtils]: Spent 7.38s on a formula simplification. DAG size of input: 690 DAG size of output: 684 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:55:05,006 WARN L234 SmtUtils]: Spent 7.75s on a formula simplification. DAG size of input: 707 DAG size of output: 690 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:55:13,667 WARN L234 SmtUtils]: Spent 8.15s on a formula simplification. DAG size of input: 721 DAG size of output: 704 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:55:13,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [670876045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:13,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:55:13,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5, 12, 13] total 37 [2022-11-03 03:55:13,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078452776] [2022-11-03 03:55:13,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:13,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 03:55:13,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:13,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 03:55:13,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1175, Unknown=0, NotChecked=0, Total=1332 [2022-11-03 03:55:13,678 INFO L87 Difference]: Start difference. First operand 3466 states and 4897 transitions. Second operand has 12 states, 9 states have (on average 8.555555555555555) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-03 03:55:19,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:19,419 INFO L93 Difference]: Finished difference Result 6936 states and 9804 transitions. [2022-11-03 03:55:19,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:55:19,420 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 8.555555555555555) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 143 [2022-11-03 03:55:19,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:19,436 INFO L225 Difference]: With dead ends: 6936 [2022-11-03 03:55:19,436 INFO L226 Difference]: Without dead ends: 3486 [2022-11-03 03:55:19,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 61.5s TimeCoverageRelationStatistics Valid=157, Invalid=1175, Unknown=0, NotChecked=0, Total=1332 [2022-11-03 03:55:19,444 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 14 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:19,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1627 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-03 03:55:19,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2022-11-03 03:55:19,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 3482. [2022-11-03 03:55:19,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3482 states, 2427 states have (on average 1.3786567779151215) internal successors, (3346), 2462 states have internal predecessors, (3346), 771 states have call successors, (771), 269 states have call predecessors, (771), 283 states have return successors, (803), 750 states have call predecessors, (803), 769 states have call successors, (803) [2022-11-03 03:55:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 4920 transitions. [2022-11-03 03:55:19,815 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 4920 transitions. Word has length 143 [2022-11-03 03:55:19,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:19,815 INFO L495 AbstractCegarLoop]: Abstraction has 3482 states and 4920 transitions. [2022-11-03 03:55:19,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 8.555555555555555) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-03 03:55:19,817 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 4920 transitions. [2022-11-03 03:55:19,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-03 03:55:19,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:19,826 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:55:19,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:20,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-03 03:55:20,050 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:20,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:20,051 INFO L85 PathProgramCache]: Analyzing trace with hash 41118105, now seen corresponding path program 1 times [2022-11-03 03:55:20,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:20,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278777373] [2022-11-03 03:55:20,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:20,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:20,672 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-03 03:55:20,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:20,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278777373] [2022-11-03 03:55:20,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278777373] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:55:20,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814663795] [2022-11-03 03:55:20,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:20,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:55:20,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:55:20,674 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:55:20,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:55:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:21,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 03:55:21,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:21,399 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-03 03:55:21,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:21,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814663795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:21,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:55:21,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-11-03 03:55:21,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491175785] [2022-11-03 03:55:21,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:21,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:55:21,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:21,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:55:21,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:55:21,402 INFO L87 Difference]: Start difference. First operand 3482 states and 4920 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-03 03:55:22,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:22,577 INFO L93 Difference]: Finished difference Result 6162 states and 8974 transitions. [2022-11-03 03:55:22,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:55:22,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 144 [2022-11-03 03:55:22,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:22,629 INFO L225 Difference]: With dead ends: 6162 [2022-11-03 03:55:22,630 INFO L226 Difference]: Without dead ends: 6149 [2022-11-03 03:55:22,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:55:22,634 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 353 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:22,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1063 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:55:22,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6149 states. [2022-11-03 03:55:23,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6149 to 4569. [2022-11-03 03:55:23,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4569 states, 3180 states have (on average 1.3761006289308175) internal successors, (4376), 3225 states have internal predecessors, (4376), 1010 states have call successors, (1010), 358 states have call predecessors, (1010), 378 states have return successors, (1052), 985 states have call predecessors, (1052), 1008 states have call successors, (1052) [2022-11-03 03:55:23,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4569 states to 4569 states and 6438 transitions. [2022-11-03 03:55:23,163 INFO L78 Accepts]: Start accepts. Automaton has 4569 states and 6438 transitions. Word has length 144 [2022-11-03 03:55:23,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:23,164 INFO L495 AbstractCegarLoop]: Abstraction has 4569 states and 6438 transitions. [2022-11-03 03:55:23,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-03 03:55:23,164 INFO L276 IsEmpty]: Start isEmpty. Operand 4569 states and 6438 transitions. [2022-11-03 03:55:23,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-03 03:55:23,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:23,175 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:55:23,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 03:55:23,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:55:23,390 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:23,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:23,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1218461252, now seen corresponding path program 1 times [2022-11-03 03:55:23,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:23,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232477475] [2022-11-03 03:55:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:23,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-03 03:55:23,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:23,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232477475] [2022-11-03 03:55:23,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232477475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:23,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:23,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:55:23,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824032260] [2022-11-03 03:55:23,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:23,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:55:23,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:23,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:55:23,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:55:23,610 INFO L87 Difference]: Start difference. First operand 4569 states and 6438 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-03 03:55:24,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:24,770 INFO L93 Difference]: Finished difference Result 9396 states and 13851 transitions. [2022-11-03 03:55:24,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:55:24,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 159 [2022-11-03 03:55:24,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:24,800 INFO L225 Difference]: With dead ends: 9396 [2022-11-03 03:55:24,801 INFO L226 Difference]: Without dead ends: 7892 [2022-11-03 03:55:24,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:55:24,809 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 425 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:24,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1681 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:55:24,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7892 states. [2022-11-03 03:55:25,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7892 to 4581. [2022-11-03 03:55:25,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4581 states, 3192 states have (on average 1.3746867167919798) internal successors, (4388), 3237 states have internal predecessors, (4388), 1010 states have call successors, (1010), 358 states have call predecessors, (1010), 378 states have return successors, (1052), 985 states have call predecessors, (1052), 1008 states have call successors, (1052) [2022-11-03 03:55:25,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 6450 transitions. [2022-11-03 03:55:25,406 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 6450 transitions. Word has length 159 [2022-11-03 03:55:25,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:25,407 INFO L495 AbstractCegarLoop]: Abstraction has 4581 states and 6450 transitions. [2022-11-03 03:55:25,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-03 03:55:25,407 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 6450 transitions. [2022-11-03 03:55:25,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-03 03:55:25,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:25,419 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:55:25,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 03:55:25,419 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:25,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:25,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2040763583, now seen corresponding path program 1 times [2022-11-03 03:55:25,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:25,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195810200] [2022-11-03 03:55:25,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:25,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-03 03:55:25,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:25,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195810200] [2022-11-03 03:55:25,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195810200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:25,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:25,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:55:25,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197892312] [2022-11-03 03:55:25,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:25,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:55:25,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:25,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:55:25,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:55:25,781 INFO L87 Difference]: Start difference. First operand 4581 states and 6450 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 03:55:27,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:27,445 INFO L93 Difference]: Finished difference Result 10904 states and 16231 transitions. [2022-11-03 03:55:27,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:55:27,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 163 [2022-11-03 03:55:27,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:27,485 INFO L225 Difference]: With dead ends: 10904 [2022-11-03 03:55:27,486 INFO L226 Difference]: Without dead ends: 9388 [2022-11-03 03:55:27,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:55:27,497 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 960 mSDsluCounter, 1934 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:27,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 2446 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:55:27,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9388 states. [2022-11-03 03:55:28,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9388 to 4647. [2022-11-03 03:55:28,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4647 states, 3240 states have (on average 1.376543209876543) internal successors, (4460), 3285 states have internal predecessors, (4460), 1028 states have call successors, (1028), 358 states have call predecessors, (1028), 378 states have return successors, (1070), 1003 states have call predecessors, (1070), 1026 states have call successors, (1070) [2022-11-03 03:55:28,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4647 states to 4647 states and 6558 transitions. [2022-11-03 03:55:28,233 INFO L78 Accepts]: Start accepts. Automaton has 4647 states and 6558 transitions. Word has length 163 [2022-11-03 03:55:28,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:28,234 INFO L495 AbstractCegarLoop]: Abstraction has 4647 states and 6558 transitions. [2022-11-03 03:55:28,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 03:55:28,234 INFO L276 IsEmpty]: Start isEmpty. Operand 4647 states and 6558 transitions. [2022-11-03 03:55:28,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-03 03:55:28,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:28,248 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:55:28,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 03:55:28,248 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:28,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:28,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1238509573, now seen corresponding path program 1 times [2022-11-03 03:55:28,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:28,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59456506] [2022-11-03 03:55:28,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:28,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:28,935 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-03 03:55:28,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:28,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59456506] [2022-11-03 03:55:28,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59456506] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:55:28,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128440312] [2022-11-03 03:55:28,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:28,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:55:28,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:55:28,938 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:55:28,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:55:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:29,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 1909 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 03:55:29,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:29,973 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-03 03:55:29,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:29,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128440312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:29,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:55:29,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-11-03 03:55:29,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429551381] [2022-11-03 03:55:29,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:29,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:55:29,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:29,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:55:29,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:55:29,978 INFO L87 Difference]: Start difference. First operand 4647 states and 6558 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 03:55:31,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:31,028 INFO L93 Difference]: Finished difference Result 6217 states and 8801 transitions. [2022-11-03 03:55:31,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:55:31,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 174 [2022-11-03 03:55:31,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:31,043 INFO L225 Difference]: With dead ends: 6217 [2022-11-03 03:55:31,043 INFO L226 Difference]: Without dead ends: 4635 [2022-11-03 03:55:31,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:55:31,049 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 364 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:31,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 587 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:55:31,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4635 states. [2022-11-03 03:55:31,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4635 to 4635. [2022-11-03 03:55:31,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4635 states, 3234 states have (on average 1.375386518243661) internal successors, (4448), 3279 states have internal predecessors, (4448), 1022 states have call successors, (1022), 358 states have call predecessors, (1022), 378 states have return successors, (1064), 997 states have call predecessors, (1064), 1020 states have call successors, (1064) [2022-11-03 03:55:31,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4635 states to 4635 states and 6534 transitions. [2022-11-03 03:55:31,623 INFO L78 Accepts]: Start accepts. Automaton has 4635 states and 6534 transitions. Word has length 174 [2022-11-03 03:55:31,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:31,624 INFO L495 AbstractCegarLoop]: Abstraction has 4635 states and 6534 transitions. [2022-11-03 03:55:31,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 03:55:31,624 INFO L276 IsEmpty]: Start isEmpty. Operand 4635 states and 6534 transitions. [2022-11-03 03:55:31,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-03 03:55:31,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:31,636 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:55:31,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:31,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 03:55:31,850 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:31,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:31,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1885625847, now seen corresponding path program 1 times [2022-11-03 03:55:31,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:31,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129656715] [2022-11-03 03:55:31,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:31,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:32,507 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-03 03:55:32,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:32,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129656715] [2022-11-03 03:55:32,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129656715] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:55:32,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77281382] [2022-11-03 03:55:32,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:32,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:55:32,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:55:32,509 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:55:32,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:55:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:33,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 1909 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:55:33,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:33,331 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 03:55:33,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:33,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77281382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:33,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:55:33,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2022-11-03 03:55:33,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115877038] [2022-11-03 03:55:33,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:33,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:55:33,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:33,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:55:33,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:55:33,334 INFO L87 Difference]: Start difference. First operand 4635 states and 6534 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-03 03:55:39,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:39,920 INFO L93 Difference]: Finished difference Result 28430 states and 42769 transitions. [2022-11-03 03:55:39,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-03 03:55:39,921 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 174 [2022-11-03 03:55:39,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:40,020 INFO L225 Difference]: With dead ends: 28430 [2022-11-03 03:55:40,020 INFO L226 Difference]: Without dead ends: 28422 [2022-11-03 03:55:40,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2022-11-03 03:55:40,030 INFO L413 NwaCegarLoop]: 1058 mSDtfsCounter, 2433 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 3082 mSolverCounterSat, 976 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2540 SdHoareTripleChecker+Valid, 3397 SdHoareTripleChecker+Invalid, 4058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 976 IncrementalHoareTripleChecker+Valid, 3082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:40,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2540 Valid, 3397 Invalid, 4058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [976 Valid, 3082 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-03 03:55:40,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28422 states. [2022-11-03 03:55:41,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28422 to 12524. [2022-11-03 03:55:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12524 states, 8773 states have (on average 1.3844750940385273) internal successors, (12146), 8942 states have internal predecessors, (12146), 2761 states have call successors, (2761), 929 states have call predecessors, (2761), 989 states have return successors, (2873), 2652 states have call predecessors, (2873), 2759 states have call successors, (2873) [2022-11-03 03:55:42,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12524 states to 12524 states and 17780 transitions. [2022-11-03 03:55:42,001 INFO L78 Accepts]: Start accepts. Automaton has 12524 states and 17780 transitions. Word has length 174 [2022-11-03 03:55:42,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:42,002 INFO L495 AbstractCegarLoop]: Abstraction has 12524 states and 17780 transitions. [2022-11-03 03:55:42,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-03 03:55:42,003 INFO L276 IsEmpty]: Start isEmpty. Operand 12524 states and 17780 transitions. [2022-11-03 03:55:42,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-03 03:55:42,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:42,036 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 3, 3, 3, 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] [2022-11-03 03:55:42,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:42,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 03:55:42,250 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:42,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:42,250 INFO L85 PathProgramCache]: Analyzing trace with hash -2071237762, now seen corresponding path program 1 times [2022-11-03 03:55:42,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:42,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126731979] [2022-11-03 03:55:42,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:42,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:42,761 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-03 03:55:42,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:42,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126731979] [2022-11-03 03:55:42,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126731979] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:55:42,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189180597] [2022-11-03 03:55:42,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:42,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:55:42,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:55:42,763 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:55:42,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:55:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:43,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 1995 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:55:43,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:43,602 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-03 03:55:43,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:43,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189180597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:43,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:55:43,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-03 03:55:43,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633690306] [2022-11-03 03:55:43,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:43,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:55:43,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:43,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:55:43,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:55:43,604 INFO L87 Difference]: Start difference. First operand 12524 states and 17780 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-03 03:55:44,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:44,555 INFO L93 Difference]: Finished difference Result 19266 states and 27380 transitions. [2022-11-03 03:55:44,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:55:44,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 183 [2022-11-03 03:55:44,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:44,579 INFO L225 Difference]: With dead ends: 19266 [2022-11-03 03:55:44,579 INFO L226 Difference]: Without dead ends: 5489 [2022-11-03 03:55:44,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:55:44,609 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 230 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:44,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 597 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:55:44,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5489 states. [2022-11-03 03:55:45,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5489 to 4941. [2022-11-03 03:55:45,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4941 states, 3426 states have (on average 1.3651488616462346) internal successors, (4677), 3498 states have internal predecessors, (4677), 1125 states have call successors, (1125), 366 states have call predecessors, (1125), 389 states have return successors, (1175), 1076 states have call predecessors, (1175), 1123 states have call successors, (1175) [2022-11-03 03:55:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4941 states to 4941 states and 6977 transitions. [2022-11-03 03:55:45,563 INFO L78 Accepts]: Start accepts. Automaton has 4941 states and 6977 transitions. Word has length 183 [2022-11-03 03:55:45,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:45,564 INFO L495 AbstractCegarLoop]: Abstraction has 4941 states and 6977 transitions. [2022-11-03 03:55:45,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-03 03:55:45,564 INFO L276 IsEmpty]: Start isEmpty. Operand 4941 states and 6977 transitions. [2022-11-03 03:55:45,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-03 03:55:45,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:45,583 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 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] [2022-11-03 03:55:45,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:45,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-03 03:55:45,810 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:45,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:45,811 INFO L85 PathProgramCache]: Analyzing trace with hash -322073813, now seen corresponding path program 1 times [2022-11-03 03:55:45,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:45,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239115850] [2022-11-03 03:55:45,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:45,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:46,033 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-03 03:55:46,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:46,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239115850] [2022-11-03 03:55:46,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239115850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:46,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:46,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:55:46,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121089226] [2022-11-03 03:55:46,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:46,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:55:46,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:46,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:55:46,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:55:46,040 INFO L87 Difference]: Start difference. First operand 4941 states and 6977 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 03:55:47,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:47,095 INFO L93 Difference]: Finished difference Result 11020 states and 15520 transitions. [2022-11-03 03:55:47,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:55:47,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 183 [2022-11-03 03:55:47,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:47,118 INFO L225 Difference]: With dead ends: 11020 [2022-11-03 03:55:47,118 INFO L226 Difference]: Without dead ends: 6749 [2022-11-03 03:55:47,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:55:47,129 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 297 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:47,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 650 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:55:47,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6749 states. [2022-11-03 03:55:47,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6749 to 6719. [2022-11-03 03:55:47,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6719 states, 4766 states have (on average 1.363197650020982) internal successors, (6497), 4857 states have internal predecessors, (6497), 1389 states have call successors, (1389), 542 states have call predecessors, (1389), 563 states have return successors, (1439), 1319 states have call predecessors, (1439), 1387 states have call successors, (1439) [2022-11-03 03:55:48,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6719 states to 6719 states and 9325 transitions. [2022-11-03 03:55:48,006 INFO L78 Accepts]: Start accepts. Automaton has 6719 states and 9325 transitions. Word has length 183 [2022-11-03 03:55:48,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:48,007 INFO L495 AbstractCegarLoop]: Abstraction has 6719 states and 9325 transitions. [2022-11-03 03:55:48,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 03:55:48,007 INFO L276 IsEmpty]: Start isEmpty. Operand 6719 states and 9325 transitions. [2022-11-03 03:55:48,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-03 03:55:48,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:48,027 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 3, 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] [2022-11-03 03:55:48,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 03:55:48,028 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:48,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:48,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1228018308, now seen corresponding path program 1 times [2022-11-03 03:55:48,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:48,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093180044] [2022-11-03 03:55:48,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:48,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:48,616 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-03 03:55:48,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:48,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093180044] [2022-11-03 03:55:48,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093180044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:48,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:48,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:55:48,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885759346] [2022-11-03 03:55:48,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:48,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:55:48,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:48,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:55:48,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:55:48,619 INFO L87 Difference]: Start difference. First operand 6719 states and 9325 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 03:55:52,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:52,315 INFO L93 Difference]: Finished difference Result 25646 states and 37039 transitions. [2022-11-03 03:55:52,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:55:52,316 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 189 [2022-11-03 03:55:52,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:52,363 INFO L225 Difference]: With dead ends: 25646 [2022-11-03 03:55:52,363 INFO L226 Difference]: Without dead ends: 18959 [2022-11-03 03:55:52,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:55:52,379 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 1742 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1822 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:52,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1822 Valid, 1936 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-03 03:55:52,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18959 states. [2022-11-03 03:55:53,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18959 to 10355. [2022-11-03 03:55:53,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10355 states, 7413 states have (on average 1.371239714015918) internal successors, (10165), 7546 states have internal predecessors, (10165), 2086 states have call successors, (2086), 811 states have call predecessors, (2086), 855 states have return successors, (2154), 1997 states have call predecessors, (2154), 2084 states have call successors, (2154) [2022-11-03 03:55:53,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10355 states to 10355 states and 14405 transitions. [2022-11-03 03:55:53,730 INFO L78 Accepts]: Start accepts. Automaton has 10355 states and 14405 transitions. Word has length 189 [2022-11-03 03:55:53,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:53,730 INFO L495 AbstractCegarLoop]: Abstraction has 10355 states and 14405 transitions. [2022-11-03 03:55:53,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 03:55:53,731 INFO L276 IsEmpty]: Start isEmpty. Operand 10355 states and 14405 transitions. [2022-11-03 03:55:53,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-03 03:55:53,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:53,757 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 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] [2022-11-03 03:55:53,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 03:55:53,757 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:53,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:53,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1027058143, now seen corresponding path program 2 times [2022-11-03 03:55:53,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:53,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392729350] [2022-11-03 03:55:53,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:53,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:54,608 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-03 03:55:54,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:54,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392729350] [2022-11-03 03:55:54,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392729350] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:55:54,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969048852] [2022-11-03 03:55:54,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:55:54,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:55:54,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:55:54,611 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:55:54,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:55:55,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-03 03:55:55,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:55:55,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 1693 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 03:55:55,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:55,454 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-03 03:55:55,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:55:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 03:55:55,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969048852] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:55:55,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:55:55,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 7] total 17 [2022-11-03 03:55:55,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751491174] [2022-11-03 03:55:55,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:55,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:55:55,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:55,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:55:55,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:55:55,741 INFO L87 Difference]: Start difference. First operand 10355 states and 14405 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 4 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 03:55:58,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:58,677 INFO L93 Difference]: Finished difference Result 26807 states and 38223 transitions. [2022-11-03 03:55:58,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:55:58,678 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 4 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 183 [2022-11-03 03:55:58,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:58,718 INFO L225 Difference]: With dead ends: 26807 [2022-11-03 03:55:58,718 INFO L226 Difference]: Without dead ends: 17359 [2022-11-03 03:55:58,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2022-11-03 03:55:58,738 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 916 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:58,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 1658 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 03:55:58,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17359 states. [2022-11-03 03:56:00,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17359 to 11247. [2022-11-03 03:56:00,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11247 states, 8312 states have (on average 1.3757218479307025) internal successors, (11435), 8421 states have internal predecessors, (11435), 2041 states have call successors, (2041), 851 states have call predecessors, (2041), 893 states have return successors, (2105), 1974 states have call predecessors, (2105), 2039 states have call successors, (2105) [2022-11-03 03:56:00,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11247 states to 11247 states and 15581 transitions. [2022-11-03 03:56:00,078 INFO L78 Accepts]: Start accepts. Automaton has 11247 states and 15581 transitions. Word has length 183 [2022-11-03 03:56:00,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:00,079 INFO L495 AbstractCegarLoop]: Abstraction has 11247 states and 15581 transitions. [2022-11-03 03:56:00,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 4 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 03:56:00,079 INFO L276 IsEmpty]: Start isEmpty. Operand 11247 states and 15581 transitions. [2022-11-03 03:56:00,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-03 03:56:00,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:00,096 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 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] [2022-11-03 03:56:00,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:00,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-03 03:56:00,310 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:00,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:00,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1125271815, now seen corresponding path program 1 times [2022-11-03 03:56:00,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:00,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451317939] [2022-11-03 03:56:00,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:00,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:00,908 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-03 03:56:00,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:00,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451317939] [2022-11-03 03:56:00,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451317939] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:56:00,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037098273] [2022-11-03 03:56:00,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:00,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:56:00,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:56:00,914 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:56:00,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 03:56:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:01,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 1990 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-03 03:56:01,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:01,786 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-03 03:56:01,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:56:01,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037098273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:01,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:56:01,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-03 03:56:01,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112851632] [2022-11-03 03:56:01,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:01,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:56:01,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:01,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:56:01,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:56:01,788 INFO L87 Difference]: Start difference. First operand 11247 states and 15581 transitions. Second operand has 8 states, 7 states have (on average 15.571428571428571) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 03:56:04,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:04,453 INFO L93 Difference]: Finished difference Result 25811 states and 36096 transitions. [2022-11-03 03:56:04,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:56:04,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.571428571428571) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) Word has length 189 [2022-11-03 03:56:04,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:04,494 INFO L225 Difference]: With dead ends: 25811 [2022-11-03 03:56:04,494 INFO L226 Difference]: Without dead ends: 14610 [2022-11-03 03:56:04,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:56:04,513 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 516 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:04,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 1928 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1543 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 03:56:04,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14610 states. [2022-11-03 03:56:06,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14610 to 11425. [2022-11-03 03:56:06,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11425 states, 8434 states have (on average 1.3702869338392223) internal successors, (11557), 8533 states have internal predecessors, (11557), 2041 states have call successors, (2041), 851 states have call predecessors, (2041), 949 states have return successors, (2217), 2040 states have call predecessors, (2217), 2039 states have call successors, (2217) [2022-11-03 03:56:06,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11425 states to 11425 states and 15815 transitions. [2022-11-03 03:56:06,111 INFO L78 Accepts]: Start accepts. Automaton has 11425 states and 15815 transitions. Word has length 189 [2022-11-03 03:56:06,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:06,111 INFO L495 AbstractCegarLoop]: Abstraction has 11425 states and 15815 transitions. [2022-11-03 03:56:06,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.571428571428571) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 03:56:06,111 INFO L276 IsEmpty]: Start isEmpty. Operand 11425 states and 15815 transitions. [2022-11-03 03:56:06,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-03 03:56:06,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:06,126 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 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] [2022-11-03 03:56:06,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:06,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-03 03:56:06,342 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:06,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:06,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1060830488, now seen corresponding path program 2 times [2022-11-03 03:56:06,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:06,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810576366] [2022-11-03 03:56:06,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:06,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:06,914 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 03:56:06,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:06,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810576366] [2022-11-03 03:56:06,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810576366] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:56:06,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432027805] [2022-11-03 03:56:06,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:56:06,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:56:06,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:56:06,917 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:56:06,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 03:56:07,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 03:56:07,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:56:07,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 1545 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:56:07,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:08,005 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-03 03:56:08,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:56:08,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432027805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:08,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:56:08,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-11-03 03:56:08,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026624307] [2022-11-03 03:56:08,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:08,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:56:08,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:08,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:56:08,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:56:08,007 INFO L87 Difference]: Start difference. First operand 11425 states and 15815 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 03:56:10,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:10,064 INFO L93 Difference]: Finished difference Result 16557 states and 23062 transitions. [2022-11-03 03:56:10,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:56:10,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) Word has length 193 [2022-11-03 03:56:10,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:10,090 INFO L225 Difference]: With dead ends: 16557 [2022-11-03 03:56:10,090 INFO L226 Difference]: Without dead ends: 11439 [2022-11-03 03:56:10,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:56:10,100 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 442 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:10,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 1142 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:56:10,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11439 states. [2022-11-03 03:56:11,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11439 to 11439. [2022-11-03 03:56:11,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11439 states, 8448 states have (on average 1.3696732954545454) internal successors, (11571), 8547 states have internal predecessors, (11571), 2041 states have call successors, (2041), 851 states have call predecessors, (2041), 949 states have return successors, (2217), 2040 states have call predecessors, (2217), 2039 states have call successors, (2217) [2022-11-03 03:56:11,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11439 states to 11439 states and 15829 transitions. [2022-11-03 03:56:11,692 INFO L78 Accepts]: Start accepts. Automaton has 11439 states and 15829 transitions. Word has length 193 [2022-11-03 03:56:11,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:11,693 INFO L495 AbstractCegarLoop]: Abstraction has 11439 states and 15829 transitions. [2022-11-03 03:56:11,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 03:56:11,693 INFO L276 IsEmpty]: Start isEmpty. Operand 11439 states and 15829 transitions. [2022-11-03 03:56:11,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-03 03:56:11,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:11,708 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 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] [2022-11-03 03:56:11,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:11,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:56:11,918 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:11,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:11,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1603322046, now seen corresponding path program 1 times [2022-11-03 03:56:11,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:11,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105842827] [2022-11-03 03:56:11,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:11,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 03:56:12,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:12,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105842827] [2022-11-03 03:56:12,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105842827] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:56:12,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358291813] [2022-11-03 03:56:12,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:12,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:56:12,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:56:12,505 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:56:12,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 03:56:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:13,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 2110 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 03:56:13,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:13,108 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-03 03:56:13,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:56:13,232 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-03 03:56:13,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358291813] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:56:13,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:56:13,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 9 [2022-11-03 03:56:13,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955428936] [2022-11-03 03:56:13,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:13,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:56:13,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:13,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:56:13,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:56:13,235 INFO L87 Difference]: Start difference. First operand 11439 states and 15829 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 03:56:14,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:14,666 INFO L93 Difference]: Finished difference Result 16557 states and 23048 transitions. [2022-11-03 03:56:14,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:56:14,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 194 [2022-11-03 03:56:14,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:14,692 INFO L225 Difference]: With dead ends: 16557 [2022-11-03 03:56:14,692 INFO L226 Difference]: Without dead ends: 11453 [2022-11-03 03:56:14,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:56:14,705 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 3 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:14,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 959 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:56:14,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11453 states. [2022-11-03 03:56:15,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11453 to 11453. [2022-11-03 03:56:15,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11453 states, 8462 states have (on average 1.3690616875443158) internal successors, (11585), 8561 states have internal predecessors, (11585), 2041 states have call successors, (2041), 851 states have call predecessors, (2041), 949 states have return successors, (2217), 2040 states have call predecessors, (2217), 2039 states have call successors, (2217) [2022-11-03 03:56:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11453 states to 11453 states and 15843 transitions. [2022-11-03 03:56:15,991 INFO L78 Accepts]: Start accepts. Automaton has 11453 states and 15843 transitions. Word has length 194 [2022-11-03 03:56:15,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:15,992 INFO L495 AbstractCegarLoop]: Abstraction has 11453 states and 15843 transitions. [2022-11-03 03:56:15,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 03:56:15,992 INFO L276 IsEmpty]: Start isEmpty. Operand 11453 states and 15843 transitions. [2022-11-03 03:56:16,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-03 03:56:16,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:16,005 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 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] [2022-11-03 03:56:16,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:16,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:56:16,206 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:16,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:16,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2007950058, now seen corresponding path program 1 times [2022-11-03 03:56:16,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:16,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463018149] [2022-11-03 03:56:16,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:16,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:16,784 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-03 03:56:16,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:16,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463018149] [2022-11-03 03:56:16,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463018149] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:56:16,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267322569] [2022-11-03 03:56:16,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:16,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:56:16,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:56:16,786 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:56:16,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 03:56:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:17,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 2129 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-03 03:56:17,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:18,082 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-03 03:56:18,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:56:18,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267322569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:18,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:56:18,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-03 03:56:18,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100117939] [2022-11-03 03:56:18,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:18,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:56:18,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:18,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:56:18,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:56:18,085 INFO L87 Difference]: Start difference. First operand 11453 states and 15843 transitions. Second operand has 8 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (29), 3 states have call predecessors, (29), 5 states have return successors, (28), 4 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 03:56:21,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:21,660 INFO L93 Difference]: Finished difference Result 31795 states and 44488 transitions. [2022-11-03 03:56:21,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:56:21,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (29), 3 states have call predecessors, (29), 5 states have return successors, (28), 4 states have call predecessors, (28), 3 states have call successors, (28) Word has length 195 [2022-11-03 03:56:21,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:21,715 INFO L225 Difference]: With dead ends: 31795 [2022-11-03 03:56:21,715 INFO L226 Difference]: Without dead ends: 21740 [2022-11-03 03:56:21,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:56:21,732 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 689 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:21,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1840 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-03 03:56:21,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21740 states. [2022-11-03 03:56:23,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21740 to 18250. [2022-11-03 03:56:23,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18250 states, 13850 states have (on average 1.3771841155234656) internal successors, (19074), 14033 states have internal predecessors, (19074), 2936 states have call successors, (2936), 1334 states have call predecessors, (2936), 1463 states have return successors, (3251), 2882 states have call predecessors, (3251), 2934 states have call successors, (3251) [2022-11-03 03:56:24,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18250 states to 18250 states and 25261 transitions. [2022-11-03 03:56:24,018 INFO L78 Accepts]: Start accepts. Automaton has 18250 states and 25261 transitions. Word has length 195 [2022-11-03 03:56:24,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:24,019 INFO L495 AbstractCegarLoop]: Abstraction has 18250 states and 25261 transitions. [2022-11-03 03:56:24,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (29), 3 states have call predecessors, (29), 5 states have return successors, (28), 4 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 03:56:24,019 INFO L276 IsEmpty]: Start isEmpty. Operand 18250 states and 25261 transitions. [2022-11-03 03:56:24,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-03 03:56:24,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:24,034 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 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] [2022-11-03 03:56:24,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:24,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-03 03:56:24,258 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:24,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:24,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1498062097, now seen corresponding path program 1 times [2022-11-03 03:56:24,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:24,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668298426] [2022-11-03 03:56:24,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:24,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:25,060 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 03:56:25,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:25,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668298426] [2022-11-03 03:56:25,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668298426] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:56:25,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346892948] [2022-11-03 03:56:25,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:25,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:56:25,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:56:25,062 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:56:25,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 03:56:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:25,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 2168 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 03:56:25,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 03:56:25,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:56:26,223 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 03:56:26,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346892948] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:56:26,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:56:26,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 8] total 16 [2022-11-03 03:56:26,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631516466] [2022-11-03 03:56:26,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:26,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 03:56:26,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:26,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 03:56:26,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:56:26,226 INFO L87 Difference]: Start difference. First operand 18250 states and 25261 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 5 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-03 03:56:31,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:31,583 INFO L93 Difference]: Finished difference Result 42769 states and 61665 transitions. [2022-11-03 03:56:31,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-03 03:56:31,584 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 5 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 193 [2022-11-03 03:56:31,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:31,664 INFO L225 Difference]: With dead ends: 42769 [2022-11-03 03:56:31,664 INFO L226 Difference]: Without dead ends: 34613 [2022-11-03 03:56:31,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 382 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2022-11-03 03:56:31,683 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 1352 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:31,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 2034 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 03:56:31,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34613 states. [2022-11-03 03:56:33,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34613 to 18222. [2022-11-03 03:56:33,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18222 states, 13822 states have (on average 1.377948198524092) internal successors, (19046), 14005 states have internal predecessors, (19046), 2936 states have call successors, (2936), 1334 states have call predecessors, (2936), 1463 states have return successors, (3251), 2882 states have call predecessors, (3251), 2934 states have call successors, (3251) [2022-11-03 03:56:33,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18222 states to 18222 states and 25233 transitions. [2022-11-03 03:56:33,894 INFO L78 Accepts]: Start accepts. Automaton has 18222 states and 25233 transitions. Word has length 193 [2022-11-03 03:56:33,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:33,894 INFO L495 AbstractCegarLoop]: Abstraction has 18222 states and 25233 transitions. [2022-11-03 03:56:33,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 5 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-03 03:56:33,895 INFO L276 IsEmpty]: Start isEmpty. Operand 18222 states and 25233 transitions. [2022-11-03 03:56:33,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-03 03:56:33,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:33,913 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:56:33,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:34,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-03 03:56:34,130 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:34,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:34,130 INFO L85 PathProgramCache]: Analyzing trace with hash -654797274, now seen corresponding path program 1 times [2022-11-03 03:56:34,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:34,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313191666] [2022-11-03 03:56:34,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:34,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-11-03 03:56:34,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:34,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313191666] [2022-11-03 03:56:34,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313191666] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:56:34,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118139001] [2022-11-03 03:56:34,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:34,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:56:34,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:56:34,822 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:56:34,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 03:56:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:35,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 2480 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 03:56:35,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:35,804 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-03 03:56:35,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:56:35,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118139001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:35,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:56:35,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-03 03:56:35,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885458285] [2022-11-03 03:56:35,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:35,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:56:35,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:35,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:56:35,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:56:35,806 INFO L87 Difference]: Start difference. First operand 18222 states and 25233 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 03:56:39,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:39,915 INFO L93 Difference]: Finished difference Result 31787 states and 45177 transitions. [2022-11-03 03:56:39,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:56:39,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 215 [2022-11-03 03:56:39,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:39,984 INFO L225 Difference]: With dead ends: 31787 [2022-11-03 03:56:39,985 INFO L226 Difference]: Without dead ends: 31784 [2022-11-03 03:56:39,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:56:39,996 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 583 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:39,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 950 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:56:40,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31784 states. [2022-11-03 03:56:42,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31784 to 18221. [2022-11-03 03:56:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18221 states, 13822 states have (on average 1.376935320503545) internal successors, (19032), 14004 states have internal predecessors, (19032), 2935 states have call successors, (2935), 1334 states have call predecessors, (2935), 1463 states have return successors, (3251), 2882 states have call predecessors, (3251), 2934 states have call successors, (3251) [2022-11-03 03:56:42,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18221 states to 18221 states and 25218 transitions. [2022-11-03 03:56:42,543 INFO L78 Accepts]: Start accepts. Automaton has 18221 states and 25218 transitions. Word has length 215 [2022-11-03 03:56:42,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:42,544 INFO L495 AbstractCegarLoop]: Abstraction has 18221 states and 25218 transitions. [2022-11-03 03:56:42,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 03:56:42,544 INFO L276 IsEmpty]: Start isEmpty. Operand 18221 states and 25218 transitions. [2022-11-03 03:56:42,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-03 03:56:42,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:42,555 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 3, 3, 3, 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] [2022-11-03 03:56:42,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:42,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:56:42,757 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:42,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:42,757 INFO L85 PathProgramCache]: Analyzing trace with hash 195280585, now seen corresponding path program 1 times [2022-11-03 03:56:42,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:42,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311409599] [2022-11-03 03:56:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:42,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:43,332 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-03 03:56:43,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:43,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311409599] [2022-11-03 03:56:43,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311409599] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:56:43,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317540288] [2022-11-03 03:56:43,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:43,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:56:43,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:56:43,338 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:56:43,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 03:56:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:43,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 2254 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 03:56:43,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-03 03:56:44,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:56:44,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317540288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:44,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:56:44,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-03 03:56:44,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756070604] [2022-11-03 03:56:44,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:44,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:56:44,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:44,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:56:44,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:56:44,140 INFO L87 Difference]: Start difference. First operand 18221 states and 25218 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-03 03:56:47,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:47,232 INFO L93 Difference]: Finished difference Result 40892 states and 57073 transitions. [2022-11-03 03:56:47,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:56:47,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 214 [2022-11-03 03:56:47,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:47,280 INFO L225 Difference]: With dead ends: 40892 [2022-11-03 03:56:47,280 INFO L226 Difference]: Without dead ends: 23091 [2022-11-03 03:56:47,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:56:47,309 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 414 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:47,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 1773 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:56:47,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23091 states. [2022-11-03 03:56:49,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23091 to 20021. [2022-11-03 03:56:49,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20021 states, 15266 states have (on average 1.3771125376654003) internal successors, (21023), 15458 states have internal predecessors, (21023), 3158 states have call successors, (3158), 1459 states have call predecessors, (3158), 1596 states have return successors, (3482), 3103 states have call predecessors, (3482), 3157 states have call successors, (3482) [2022-11-03 03:56:49,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20021 states to 20021 states and 27663 transitions. [2022-11-03 03:56:49,695 INFO L78 Accepts]: Start accepts. Automaton has 20021 states and 27663 transitions. Word has length 214 [2022-11-03 03:56:49,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:49,695 INFO L495 AbstractCegarLoop]: Abstraction has 20021 states and 27663 transitions. [2022-11-03 03:56:49,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-03 03:56:49,695 INFO L276 IsEmpty]: Start isEmpty. Operand 20021 states and 27663 transitions. [2022-11-03 03:56:49,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-03 03:56:49,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:49,707 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 3, 3, 3, 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] [2022-11-03 03:56:49,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:49,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-03 03:56:49,908 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:49,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:49,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1178008461, now seen corresponding path program 1 times [2022-11-03 03:56:49,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:49,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641627990] [2022-11-03 03:56:49,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:49,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:50,602 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-03 03:56:50,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:50,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641627990] [2022-11-03 03:56:50,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641627990] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:56:50,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689911999] [2022-11-03 03:56:50,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:50,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:56:50,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:56:50,606 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:56:50,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 03:56:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:51,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 2254 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-03 03:56:51,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-03 03:56:51,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:56:51,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689911999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:51,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:56:51,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-11-03 03:56:51,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106317641] [2022-11-03 03:56:51,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:51,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:56:51,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:51,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:56:51,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:56:51,486 INFO L87 Difference]: Start difference. First operand 20021 states and 27663 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 03:56:54,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:54,313 INFO L93 Difference]: Finished difference Result 40116 states and 55384 transitions. [2022-11-03 03:56:54,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:56:54,313 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 214 [2022-11-03 03:56:54,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:54,361 INFO L225 Difference]: With dead ends: 40116 [2022-11-03 03:56:54,361 INFO L226 Difference]: Without dead ends: 20021 [2022-11-03 03:56:54,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:56:54,388 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 332 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:54,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 858 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:56:54,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20021 states. [2022-11-03 03:56:57,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20021 to 20021. [2022-11-03 03:56:57,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20021 states, 15266 states have (on average 1.3771125376654003) internal successors, (21023), 15458 states have internal predecessors, (21023), 3158 states have call successors, (3158), 1459 states have call predecessors, (3158), 1596 states have return successors, (3422), 3103 states have call predecessors, (3422), 3157 states have call successors, (3422) [2022-11-03 03:56:57,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20021 states to 20021 states and 27603 transitions. [2022-11-03 03:56:57,181 INFO L78 Accepts]: Start accepts. Automaton has 20021 states and 27603 transitions. Word has length 214 [2022-11-03 03:56:57,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:57,182 INFO L495 AbstractCegarLoop]: Abstraction has 20021 states and 27603 transitions. [2022-11-03 03:56:57,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 03:56:57,182 INFO L276 IsEmpty]: Start isEmpty. Operand 20021 states and 27603 transitions. [2022-11-03 03:56:57,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-03 03:56:57,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:57,199 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:56:57,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:57,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-03 03:56:57,414 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:57,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:57,414 INFO L85 PathProgramCache]: Analyzing trace with hash -331838212, now seen corresponding path program 1 times [2022-11-03 03:56:57,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:57,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786181121] [2022-11-03 03:56:57,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:57,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:58,032 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-03 03:56:58,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:58,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786181121] [2022-11-03 03:56:58,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786181121] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:56:58,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007377877] [2022-11-03 03:56:58,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:58,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:56:58,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:56:58,038 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:56:58,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abac6724-78c1-4996-b412-96aab7c806ee/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-03 03:56:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:58,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 03:56:58,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:58,994 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-03 03:56:58,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:56:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-03 03:56:59,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007377877] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:56:59,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [638586834] [2022-11-03 03:56:59,218 INFO L159 IcfgInterpreter]: Started Sifa with 146 locations of interest [2022-11-03 03:56:59,219 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:56:59,219 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:56:59,220 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:56:59,220 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:57:14,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:14,855 INFO L356 Elim1Store]: treesize reduction 250, result has 47.5 percent of original size [2022-11-03 03:57:14,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 26 select indices, 26 select index equivalence classes, 327 disjoint index pairs (out of 325 index pairs), introduced 26 new quantified variables, introduced 25 case distinctions, treesize of input 137 treesize of output 314 [2022-11-03 03:57:15,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:16,104 INFO L356 Elim1Store]: treesize reduction 450, result has 33.4 percent of original size [2022-11-03 03:57:16,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 28 select indices, 28 select index equivalence classes, 353 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 50 case distinctions, treesize of input 147 treesize of output 325 [2022-11-03 03:57:17,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:17,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 28 select indices, 28 select index equivalence classes, 378 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 85 [2022-11-03 03:57:17,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:17,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:17,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:17,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:17,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:17,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:17,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:17,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:17,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:17,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:17,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,060 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 61 select indices, 61 select index equivalence classes, 835 disjoint index pairs (out of 1830 index pairs), introduced 61 new quantified variables, introduced 0 case distinctions, treesize of input 542 treesize of output 184 [2022-11-03 03:57:18,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:18,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 27 select indices, 27 select index equivalence classes, 352 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 82 [2022-11-03 03:57:19,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 61 select indices, 61 select index equivalence classes, 835 disjoint index pairs (out of 1830 index pairs), introduced 61 new quantified variables, introduced 0 case distinctions, treesize of input 542 treesize of output 184 [2022-11-03 03:57:19,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:19,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 28 select indices, 28 select index equivalence classes, 378 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 85 [2022-11-03 03:57:20,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:20,101 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 27 select indices, 27 select index equivalence classes, 352 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 82 [2022-11-03 03:57:24,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:24,958 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 75 select indices, 75 select index equivalence classes, 920 disjoint index pairs (out of 2775 index pairs), introduced 75 new quantified variables, introduced 0 case distinctions, treesize of input 692 treesize of output 913 [2022-11-03 03:57:25,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:57:25,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:25,353 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 75 select indices, 75 select index equivalence classes, 920 disjoint index pairs (out of 2775 index pairs), introduced 75 new quantified variables, introduced 0 case distinctions, treesize of input 684 treesize of output 905 [2022-11-03 03:57:27,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:27,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,452 INFO L356 Elim1Store]: treesize reduction 150, result has 12.8 percent of original size [2022-11-03 03:57:28,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 76 select indices, 76 select index equivalence classes, 1061 disjoint index pairs (out of 2850 index pairs), introduced 76 new quantified variables, introduced 78 case distinctions, treesize of input 3443 treesize of output 3223 [2022-11-03 03:57:28,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:28,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:29,458 INFO L356 Elim1Store]: treesize reduction 144, result has 13.3 percent of original size [2022-11-03 03:57:29,461 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 76 select indices, 76 select index equivalence classes, 1061 disjoint index pairs (out of 2850 index pairs), introduced 76 new quantified variables, introduced 78 case distinctions, treesize of input 3441 treesize of output 3221 [2022-11-03 03:57:29,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3441 treesize of output 3440 [2022-11-03 03:57:31,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:57:31,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:57:31,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:57:42,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:57:42,053 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2022-11-03 03:57:42,164 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:57:42,169 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:57:42,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:57:42,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:57:42,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:57:42,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:57:43,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:57:43,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:57:43,622 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:57:43,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:57:44,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:44,284 INFO L356 Elim1Store]: treesize reduction 56, result has 33.3 percent of original size [2022-11-03 03:57:44,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 34 treesize of output 41 [2022-11-03 03:57:44,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:44,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:44,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:44,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2022-11-03 03:57:44,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:44,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:44,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:57:44,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2022-11-03 03:57:45,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:45,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:45,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:45,114 INFO L356 Elim1Store]: treesize reduction 69, result has 21.6 percent of original size [2022-11-03 03:57:45,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 52 treesize of output 55 [2022-11-03 03:57:45,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:45,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:45,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:45,246 INFO L356 Elim1Store]: treesize reduction 69, result has 21.6 percent of original size [2022-11-03 03:57:45,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 52 treesize of output 55 [2022-11-03 03:57:45,359 INFO L356 Elim1Store]: treesize reduction 35, result has 35.2 percent of original size [2022-11-03 03:57:45,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 72 [2022-11-03 03:57:46,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5