./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/verifythis/duplets.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/duplets.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac76721ba91522692e2c3e4d1ea27df0200031dd012c5066cc7280e0ae6e2244 --- 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-2329fc7 [2022-12-14 07:15:14,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:15:14,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:15:14,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:15:14,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:15:14,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:15:14,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:15:14,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:15:14,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:15:14,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:15:14,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:15:14,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:15:14,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:15:14,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:15:14,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:15:14,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:15:14,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:15:14,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:15:14,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:15:14,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:15:14,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:15:14,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:15:14,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:15:14,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:15:14,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:15:14,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:15:14,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:15:14,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:15:14,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:15:14,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:15:14,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:15:14,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:15:14,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:15:14,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:15:14,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:15:14,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:15:14,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:15:14,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:15:14,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:15:14,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:15:14,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:15:14,235 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 07:15:14,250 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:15:14,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:15:14,251 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:15:14,251 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:15:14,251 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:15:14,251 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:15:14,251 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:15:14,252 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:15:14,252 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:15:14,252 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:15:14,252 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:15:14,252 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:15:14,252 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:15:14,253 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:15:14,253 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:15:14,253 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:15:14,253 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:15:14,253 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:15:14,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 07:15:14,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 07:15:14,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:15:14,254 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:15:14,254 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 07:15:14,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:15:14,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:15:14,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:15:14,255 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 07:15:14,255 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 07:15:14,255 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 07:15:14,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:15:14,256 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 07:15:14,256 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:15:14,256 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:15:14,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:15:14,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:15:14,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:15:14,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:15:14,257 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:15:14,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:15:14,257 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:15:14,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:15:14,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:15:14,257 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_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac76721ba91522692e2c3e4d1ea27df0200031dd012c5066cc7280e0ae6e2244 [2022-12-14 07:15:14,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:15:14,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:15:14,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:15:14,464 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:15:14,464 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:15:14,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/verifythis/duplets.c [2022-12-14 07:15:17,025 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:15:17,208 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:15:17,209 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/sv-benchmarks/c/verifythis/duplets.c [2022-12-14 07:15:17,213 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/data/fe0cb6b26/109a1d29f5e24500a614c2d2fb1faa97/FLAGee63f443e [2022-12-14 07:15:17,632 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/data/fe0cb6b26/109a1d29f5e24500a614c2d2fb1faa97 [2022-12-14 07:15:17,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:15:17,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:15:17,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:15:17,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:15:17,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:15:17,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:15:17" (1/1) ... [2022-12-14 07:15:17,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e1af59b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:17, skipping insertion in model container [2022-12-14 07:15:17,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:15:17" (1/1) ... [2022-12-14 07:15:17,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:15:17,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:15:17,780 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/sv-benchmarks/c/verifythis/duplets.c[485,498] [2022-12-14 07:15:17,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:15:17,815 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:15:17,827 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/sv-benchmarks/c/verifythis/duplets.c[485,498] [2022-12-14 07:15:17,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:15:17,852 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:15:17,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:17 WrapperNode [2022-12-14 07:15:17,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:15:17,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:15:17,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:15:17,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:15:17,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:17" (1/1) ... [2022-12-14 07:15:17,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:17" (1/1) ... [2022-12-14 07:15:17,890 INFO L138 Inliner]: procedures = 21, calls = 43, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 123 [2022-12-14 07:15:17,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:15:17,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:15:17,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:15:17,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:15:17,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:17" (1/1) ... [2022-12-14 07:15:17,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:17" (1/1) ... [2022-12-14 07:15:17,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:17" (1/1) ... [2022-12-14 07:15:17,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:17" (1/1) ... [2022-12-14 07:15:17,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:17" (1/1) ... [2022-12-14 07:15:17,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:17" (1/1) ... [2022-12-14 07:15:17,914 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:17" (1/1) ... [2022-12-14 07:15:17,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:17" (1/1) ... [2022-12-14 07:15:17,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:15:17,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:15:17,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:15:17,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:15:17,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:17" (1/1) ... [2022-12-14 07:15:17,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:15:17,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:15:17,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:15:17,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:15:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:15:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 07:15:17,979 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 07:15:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:15:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 07:15:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 07:15:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 07:15:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:15:17,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:15:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 07:15:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 07:15:17,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 07:15:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 07:15:18,053 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:15:18,055 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:15:18,350 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:15:18,388 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:15:18,388 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 07:15:18,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:15:18 BoogieIcfgContainer [2022-12-14 07:15:18,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:15:18,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:15:18,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:15:18,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:15:18,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:15:17" (1/3) ... [2022-12-14 07:15:18,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d998a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:15:18, skipping insertion in model container [2022-12-14 07:15:18,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:17" (2/3) ... [2022-12-14 07:15:18,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d998a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:15:18, skipping insertion in model container [2022-12-14 07:15:18,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:15:18" (3/3) ... [2022-12-14 07:15:18,397 INFO L112 eAbstractionObserver]: Analyzing ICFG duplets.c [2022-12-14 07:15:18,412 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:15:18,412 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2022-12-14 07:15:18,446 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:15:18,451 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@c60d9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:15:18,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-12-14 07:15:18,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 75 states have internal predecessors, (81), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 07:15:18,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 07:15:18,460 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:15:18,460 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:15:18,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:15:18,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:15:18,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1311551543, now seen corresponding path program 1 times [2022-12-14 07:15:18,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:15:18,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504377995] [2022-12-14 07:15:18,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:18,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:15:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:15:18,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:15:18,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504377995] [2022-12-14 07:15:18,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504377995] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:15:18,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:15:18,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:15:18,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161331613] [2022-12-14 07:15:18,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:15:18,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:15:18,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:15:18,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:15:18,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:15:18,752 INFO L87 Difference]: Start difference. First operand has 87 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 75 states have internal predecessors, (81), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 07:15:18,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:15:18,827 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2022-12-14 07:15:18,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:15:18,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 16 [2022-12-14 07:15:18,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:15:18,835 INFO L225 Difference]: With dead ends: 85 [2022-12-14 07:15:18,835 INFO L226 Difference]: Without dead ends: 84 [2022-12-14 07:15:18,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:15:18,839 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 65 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:15:18,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 62 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:15:18,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-12-14 07:15:18,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-12-14 07:15:18,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 38 states have (on average 2.026315789473684) internal successors, (77), 72 states have internal predecessors, (77), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 07:15:18,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2022-12-14 07:15:18,868 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 16 [2022-12-14 07:15:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:15:18,869 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2022-12-14 07:15:18,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 07:15:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2022-12-14 07:15:18,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 07:15:18,870 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:15:18,870 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:15:18,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:15:18,871 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:15:18,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:15:18,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1311551544, now seen corresponding path program 1 times [2022-12-14 07:15:18,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:15:18,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543805028] [2022-12-14 07:15:18,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:18,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:15:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:19,106 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 07:15:19,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:15:19,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543805028] [2022-12-14 07:15:19,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543805028] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:15:19,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706526663] [2022-12-14 07:15:19,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:19,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:15:19,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:15:19,109 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:15:19,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 07:15:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:19,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 07:15:19,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:15:19,267 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 07:15:19,495 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 07:15:19,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:15:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 07:15:19,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706526663] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:15:19,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [616344080] [2022-12-14 07:15:19,783 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 07:15:19,784 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:15:19,788 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:15:19,793 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:15:19,794 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:15:19,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:19,898 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 22 [2022-12-14 07:15:19,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:19,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:19,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:19,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 07:15:19,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:19,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:20,002 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:20,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:20,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:20,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:20,078 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:20,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:20,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:20,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:20,244 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:20,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:20,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:20,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:20,353 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:20,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:20,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:20,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:20,480 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:20,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:20,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:20,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:20,563 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:20,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:20,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:20,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:20,746 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:20,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:20,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:20,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:20,817 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:20,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:20,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:20,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:20,884 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:20,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:20,914 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-12-14 07:15:20,930 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:15:22,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [616344080] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:15:22,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:15:22,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 8, 5] total 22 [2022-12-14 07:15:22,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003147837] [2022-12-14 07:15:22,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:15:22,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 07:15:22,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:15:22,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 07:15:22,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2022-12-14 07:15:22,448 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand has 11 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 07:15:22,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:15:22,790 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2022-12-14 07:15:22,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 07:15:22,791 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 16 [2022-12-14 07:15:22,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:15:22,792 INFO L225 Difference]: With dead ends: 83 [2022-12-14 07:15:22,792 INFO L226 Difference]: Without dead ends: 83 [2022-12-14 07:15:22,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2022-12-14 07:15:22,792 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 82 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:15:22,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 193 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:15:22,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-12-14 07:15:22,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-12-14 07:15:22,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 38 states have (on average 2.0) internal successors, (76), 71 states have internal predecessors, (76), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 07:15:22,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2022-12-14 07:15:22,798 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 16 [2022-12-14 07:15:22,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:15:22,798 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2022-12-14 07:15:22,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 07:15:22,798 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2022-12-14 07:15:22,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 07:15:22,798 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:15:22,798 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:15:22,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 07:15:22,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-14 07:15:23,001 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:15:23,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:15:23,003 INFO L85 PathProgramCache]: Analyzing trace with hash 2003392154, now seen corresponding path program 1 times [2022-12-14 07:15:23,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:15:23,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580503756] [2022-12-14 07:15:23,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:23,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:15:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:23,185 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 07:15:23,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:15:23,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580503756] [2022-12-14 07:15:23,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580503756] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:15:23,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172274354] [2022-12-14 07:15:23,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:23,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:15:23,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:15:23,187 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:15:23,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 07:15:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:23,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-14 07:15:23,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:15:23,260 INFO L350 Elim1Store]: Elim1 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 10 treesize of output 9 [2022-12-14 07:15:23,677 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:15:23,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:15:24,128 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 07:15:24,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172274354] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:15:24,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1321321079] [2022-12-14 07:15:24,130 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 07:15:24,130 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:15:24,131 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:15:24,131 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:15:24,131 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:15:24,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 07:15:24,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,197 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 22 [2022-12-14 07:15:24,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,239 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:24,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:24,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,297 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:24,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:24,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,394 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:24,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:24,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,475 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:24,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:24,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,636 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:24,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:24,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,692 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:24,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:24,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:24,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-12-14 07:15:24,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,843 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:24,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:24,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,888 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:24,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:24,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:24,931 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:24,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:24,949 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-12-14 07:15:24,958 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:15:26,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1321321079] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:15:26,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:15:26,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5, 8, 7] total 26 [2022-12-14 07:15:26,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550009967] [2022-12-14 07:15:26,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:15:26,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 07:15:26,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:15:26,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 07:15:26,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2022-12-14 07:15:26,730 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand has 12 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 07:15:27,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:15:27,252 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2022-12-14 07:15:27,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 07:15:27,252 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 17 [2022-12-14 07:15:27,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:15:27,253 INFO L225 Difference]: With dead ends: 82 [2022-12-14 07:15:27,253 INFO L226 Difference]: Without dead ends: 82 [2022-12-14 07:15:27,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2022-12-14 07:15:27,254 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 80 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 07:15:27,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 205 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 07:15:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-12-14 07:15:27,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-12-14 07:15:27,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 38 states have (on average 1.9736842105263157) internal successors, (75), 70 states have internal predecessors, (75), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 07:15:27,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2022-12-14 07:15:27,258 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 17 [2022-12-14 07:15:27,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:15:27,258 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2022-12-14 07:15:27,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 07:15:27,258 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2022-12-14 07:15:27,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 07:15:27,259 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:15:27,259 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:15:27,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 07:15:27,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:15:27,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:15:27,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:15:27,462 INFO L85 PathProgramCache]: Analyzing trace with hash 194668906, now seen corresponding path program 1 times [2022-12-14 07:15:27,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:15:27,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880146655] [2022-12-14 07:15:27,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:27,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:15:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:15:27,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:15:27,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880146655] [2022-12-14 07:15:27,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880146655] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:15:27,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:15:27,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:15:27,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596047024] [2022-12-14 07:15:27,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:15:27,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:15:27,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:15:27,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:15:27,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:15:27,664 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 07:15:27,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:15:27,742 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2022-12-14 07:15:27,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:15:27,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 20 [2022-12-14 07:15:27,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:15:27,743 INFO L225 Difference]: With dead ends: 77 [2022-12-14 07:15:27,743 INFO L226 Difference]: Without dead ends: 77 [2022-12-14 07:15:27,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:15:27,744 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 112 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:15:27,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 64 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:15:27,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-14 07:15:27,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-12-14 07:15:27,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 65 states have internal predecessors, (70), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 07:15:27,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2022-12-14 07:15:27,751 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 20 [2022-12-14 07:15:27,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:15:27,751 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2022-12-14 07:15:27,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 07:15:27,751 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2022-12-14 07:15:27,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 07:15:27,752 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:15:27,752 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:15:27,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 07:15:27,752 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:15:27,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:15:27,752 INFO L85 PathProgramCache]: Analyzing trace with hash 194668907, now seen corresponding path program 1 times [2022-12-14 07:15:27,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:15:27,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035375936] [2022-12-14 07:15:27,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:27,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:15:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:15:27,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:15:27,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035375936] [2022-12-14 07:15:27,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035375936] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:15:27,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:15:27,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:15:27,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648265602] [2022-12-14 07:15:27,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:15:27,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:15:27,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:15:27,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:15:27,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:15:27,981 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 07:15:28,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:15:28,127 INFO L93 Difference]: Finished difference Result 134 states and 154 transitions. [2022-12-14 07:15:28,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:15:28,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 20 [2022-12-14 07:15:28,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:15:28,128 INFO L225 Difference]: With dead ends: 134 [2022-12-14 07:15:28,128 INFO L226 Difference]: Without dead ends: 134 [2022-12-14 07:15:28,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:15:28,129 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 169 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:15:28,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 93 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:15:28,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-12-14 07:15:28,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 81. [2022-12-14 07:15:28,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 43 states have (on average 1.813953488372093) internal successors, (78), 69 states have internal predecessors, (78), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 07:15:28,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2022-12-14 07:15:28,134 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 20 [2022-12-14 07:15:28,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:15:28,134 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2022-12-14 07:15:28,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 07:15:28,135 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2022-12-14 07:15:28,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 07:15:28,135 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:15:28,135 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:15:28,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 07:15:28,135 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:15:28,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:15:28,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1739768799, now seen corresponding path program 1 times [2022-12-14 07:15:28,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:15:28,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889694039] [2022-12-14 07:15:28,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:28,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:15:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 07:15:28,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:15:28,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889694039] [2022-12-14 07:15:28,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889694039] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:15:28,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:15:28,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 07:15:28,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533012961] [2022-12-14 07:15:28,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:15:28,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 07:15:28,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:15:28,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 07:15:28,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 07:15:28,541 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand has 9 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 07:15:29,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:15:29,413 INFO L93 Difference]: Finished difference Result 237 states and 272 transitions. [2022-12-14 07:15:29,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 07:15:29,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 21 [2022-12-14 07:15:29,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:15:29,414 INFO L225 Difference]: With dead ends: 237 [2022-12-14 07:15:29,414 INFO L226 Difference]: Without dead ends: 237 [2022-12-14 07:15:29,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-12-14 07:15:29,415 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 533 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 07:15:29,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 195 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 07:15:29,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-12-14 07:15:29,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 84. [2022-12-14 07:15:29,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 46 states have (on average 1.7826086956521738) internal successors, (82), 72 states have internal predecessors, (82), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 07:15:29,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2022-12-14 07:15:29,420 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 21 [2022-12-14 07:15:29,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:15:29,421 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2022-12-14 07:15:29,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 07:15:29,421 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2022-12-14 07:15:29,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 07:15:29,421 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:15:29,421 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:15:29,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 07:15:29,422 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:15:29,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:15:29,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1292239534, now seen corresponding path program 1 times [2022-12-14 07:15:29,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:15:29,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333258477] [2022-12-14 07:15:29,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:29,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:15:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:29,485 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 07:15:29,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:15:29,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333258477] [2022-12-14 07:15:29,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333258477] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:15:29,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599466539] [2022-12-14 07:15:29,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:29,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:15:29,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:15:29,487 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:15:29,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 07:15:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:29,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 07:15:29,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:15:29,571 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 07:15:29,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:15:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 07:15:29,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599466539] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:15:29,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [374640896] [2022-12-14 07:15:29,646 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 07:15:29,647 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:15:29,647 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:15:29,647 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:15:29,647 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:15:29,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:29,688 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 22 [2022-12-14 07:15:29,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:29,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:29,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:29,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 07:15:29,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:29,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:29,742 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:29,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:29,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:29,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:29,790 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:29,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:29,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:29,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:29,865 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:29,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:29,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:29,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:29,925 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:29,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:30,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,032 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:30,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:30,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,094 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:30,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:30,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:30,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-12-14 07:15:30,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:30,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 63 [2022-12-14 07:15:30,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:30,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-12-14 07:15:30,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,398 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:30,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:30,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,460 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:30,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:30,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:30,509 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:30,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:30,531 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-12-14 07:15:30,542 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:15:32,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [374640896] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:15:32,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:15:32,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [6, 6, 6] total 20 [2022-12-14 07:15:32,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140982764] [2022-12-14 07:15:32,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:15:32,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 07:15:32,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:15:32,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 07:15:32,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-12-14 07:15:32,890 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand has 13 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 07:15:34,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:15:34,130 INFO L93 Difference]: Finished difference Result 115 states and 135 transitions. [2022-12-14 07:15:34,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 07:15:34,130 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 23 [2022-12-14 07:15:34,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:15:34,131 INFO L225 Difference]: With dead ends: 115 [2022-12-14 07:15:34,131 INFO L226 Difference]: Without dead ends: 110 [2022-12-14 07:15:34,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-12-14 07:15:34,131 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 104 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:15:34,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 248 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 07:15:34,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-12-14 07:15:34,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2022-12-14 07:15:34,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 64 states have (on average 1.609375) internal successors, (103), 91 states have internal predecessors, (103), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 07:15:34,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 130 transitions. [2022-12-14 07:15:34,136 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 130 transitions. Word has length 23 [2022-12-14 07:15:34,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:15:34,136 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 130 transitions. [2022-12-14 07:15:34,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 07:15:34,136 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 130 transitions. [2022-12-14 07:15:34,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 07:15:34,137 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:15:34,137 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:15:34,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 07:15:34,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:15:34,337 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:15:34,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:15:34,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1897490764, now seen corresponding path program 1 times [2022-12-14 07:15:34,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:15:34,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629530911] [2022-12-14 07:15:34,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:34,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:15:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:34,375 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:15:34,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:15:34,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629530911] [2022-12-14 07:15:34,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629530911] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:15:34,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560744567] [2022-12-14 07:15:34,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:34,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:15:34,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:15:34,377 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:15:34,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 07:15:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:34,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 07:15:34,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:15:34,434 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:15:34,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:15:34,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560744567] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:15:34,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 07:15:34,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-12-14 07:15:34,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609108326] [2022-12-14 07:15:34,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:15:34,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:15:34,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:15:34,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:15:34,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:15:34,436 INFO L87 Difference]: Start difference. First operand 107 states and 130 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 07:15:34,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:15:34,507 INFO L93 Difference]: Finished difference Result 282 states and 334 transitions. [2022-12-14 07:15:34,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 07:15:34,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 22 [2022-12-14 07:15:34,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:15:34,509 INFO L225 Difference]: With dead ends: 282 [2022-12-14 07:15:34,509 INFO L226 Difference]: Without dead ends: 282 [2022-12-14 07:15:34,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 07:15:34,510 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 182 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:15:34,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 264 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:15:34,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-12-14 07:15:34,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 109. [2022-12-14 07:15:34,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 66 states have (on average 1.606060606060606) internal successors, (106), 93 states have internal predecessors, (106), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 07:15:34,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 133 transitions. [2022-12-14 07:15:34,518 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 133 transitions. Word has length 22 [2022-12-14 07:15:34,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:15:34,518 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 133 transitions. [2022-12-14 07:15:34,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 07:15:34,518 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 133 transitions. [2022-12-14 07:15:34,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 07:15:34,519 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:15:34,519 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:15:34,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 07:15:34,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:15:34,719 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:15:34,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:15:34,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1966086971, now seen corresponding path program 1 times [2022-12-14 07:15:34,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:15:34,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413689291] [2022-12-14 07:15:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:34,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:15:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:35,205 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 07:15:35,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:15:35,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413689291] [2022-12-14 07:15:35,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413689291] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:15:35,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:15:35,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 07:15:35,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683131096] [2022-12-14 07:15:35,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:15:35,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 07:15:35,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:15:35,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 07:15:35,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-14 07:15:35,206 INFO L87 Difference]: Start difference. First operand 109 states and 133 transitions. Second operand has 10 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 8 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 07:15:35,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:15:35,645 INFO L93 Difference]: Finished difference Result 112 states and 132 transitions. [2022-12-14 07:15:35,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 07:15:35,645 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 8 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 25 [2022-12-14 07:15:35,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:15:35,647 INFO L225 Difference]: With dead ends: 112 [2022-12-14 07:15:35,647 INFO L226 Difference]: Without dead ends: 112 [2022-12-14 07:15:35,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-12-14 07:15:35,647 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 312 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:15:35,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 213 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:15:35,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-12-14 07:15:35,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2022-12-14 07:15:35,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 66 states have (on average 1.5909090909090908) internal successors, (105), 93 states have internal predecessors, (105), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 07:15:35,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2022-12-14 07:15:35,651 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 132 transitions. Word has length 25 [2022-12-14 07:15:35,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:15:35,651 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 132 transitions. [2022-12-14 07:15:35,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 8 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 07:15:35,651 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 132 transitions. [2022-12-14 07:15:35,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 07:15:35,652 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:15:35,652 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:15:35,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 07:15:35,652 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:15:35,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:15:35,652 INFO L85 PathProgramCache]: Analyzing trace with hash 118458110, now seen corresponding path program 1 times [2022-12-14 07:15:35,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:15:35,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559902806] [2022-12-14 07:15:35,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:35,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:15:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:35,923 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 07:15:35,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:15:35,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559902806] [2022-12-14 07:15:35,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559902806] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:15:35,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463839433] [2022-12-14 07:15:35,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:35,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:15:35,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:15:35,925 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:15:35,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 07:15:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:35,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 59 conjunts are in the unsatisfiable core [2022-12-14 07:15:35,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:15:35,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-14 07:15:36,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2022-12-14 07:15:36,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:36,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:36,264 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 07:15:36,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 28 treesize of output 34 [2022-12-14 07:15:36,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-12-14 07:15:36,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2022-12-14 07:15:36,632 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 07:15:36,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:15:36,957 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:15:36,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 91 [2022-12-14 07:15:38,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463839433] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:15:38,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1058585285] [2022-12-14 07:15:38,186 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 07:15:38,186 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:15:38,187 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:15:38,187 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:15:38,187 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:15:38,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 07:15:38,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,245 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 22 [2022-12-14 07:15:38,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,286 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:38,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:38,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,334 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:38,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:38,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,424 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:38,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:38,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,487 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:38,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:38,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,588 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:38,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:38,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,656 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:38,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:38,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:38,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-12-14 07:15:38,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:38,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 63 [2022-12-14 07:15:38,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:38,846 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 43 treesize of output 39 [2022-12-14 07:15:39,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:39,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:39,541 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:39,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:39,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:39,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:39,593 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:39,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:39,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:39,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:39,640 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:39,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:39,660 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-12-14 07:15:39,670 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:15:46,161 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2767#(and (<= |ULTIMATE.start_mkdup_~a#1.offset| 0) (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= (+ (* |ULTIMATE.start_finddup_~i~1#1| 4) |ULTIMATE.start_finddup_~a#1.offset| 4) (select |#length| |ULTIMATE.start_finddup_~a#1.base|)) (<= 0 |ULTIMATE.start_finddup_~_i#1.offset|) (<= 0 |ULTIMATE.start_main_~#i~2#1.base|) (= |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1| 4) (<= |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934588) (<= |ULTIMATE.start_finddup_#in~_i#1.offset| 0) (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= 0 |ULTIMATE.start_finddup_#in~_i#1.offset|) (<= |ULTIMATE.start_mkdup_~j~0#1| 2147483647) (<= 0 |ULTIMATE.start_mkdup_~a#1.offset|) (<= |ULTIMATE.start_mkdup_~i~0#1| 2147483647) (<= |ULTIMATE.start_finddup_~a#1.offset| 0) (<= |ULTIMATE.start_mkdup_~n#1| 2147483647) (not (<= (+ (* |ULTIMATE.start_finddup_~j~1#1| 4) |ULTIMATE.start_finddup_~a#1.offset| 4) (select |#length| |ULTIMATE.start_finddup_~a#1.base|))) (<= |ULTIMATE.start_mkdup_#in~a#1.offset| 0) (<= 0 (+ |ULTIMATE.start_mkdup_~x~0#1| 2147483648)) (<= |ULTIMATE.start_finddup_~_i#1.offset| 0) (<= 1 |ULTIMATE.start_finddup_#in~n#1|) (<= |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483647) (<= 1 |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1|) (= (select (select |#memory_int| |ULTIMATE.start_finddup_~a#1.base|) (+ (* |ULTIMATE.start_finddup_~i~1#1| 4) |ULTIMATE.start_finddup_~a#1.offset|)) |ULTIMATE.start_finddup_#t~mem10#1|) (<= 0 |ULTIMATE.start_finddup_#in~_j#1.offset|) (<= 0 (+ |ULTIMATE.start_mkdup_~j~0#1| 2147483648)) (<= 0 |ULTIMATE.start_finddup_#in~_i#1.base|) (<= |ULTIMATE.start_mkdup_#in~n#1| 2147483647) (<= 0 |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset|) (<= 4 |ULTIMATE.start_#Ultimate.meminit_#product#1|) (<= |ULTIMATE.start_mkdup_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_mkdup_~n#1|) (<= 0 |ULTIMATE.start_finddup_~_i#1.base|) (= |ULTIMATE.start_finddup_~i~1#1| 0) (= |ULTIMATE.start_main_#t~malloc13#1.offset| 0) (<= |ULTIMATE.start_finddup_~n#1| 2147483647) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_finddup_#in~n#1| 2147483647) (<= |ULTIMATE.start_finddup_#in~a#1.offset| 0) (= |ULTIMATE.start_main_~#j~2#1.offset| 0) (<= 0 |ULTIMATE.start_finddup_~_j#1.offset|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_mkdup_#in~a#1.offset|) (<= 0 |ULTIMATE.start_finddup_~_j#1.base|) (<= 0 |ULTIMATE.start_main_~#j~2#1.base|) (<= |ULTIMATE.start_finddup_~_j#1.offset| 0) (= (select |#valid| |ULTIMATE.start_finddup_~a#1.base|) 1) (<= 0 (+ |ULTIMATE.start_mkdup_~i~0#1| 2147483648)) (<= 0 |ULTIMATE.start_finddup_#in~a#1.offset|) (<= 0 |ULTIMATE.start_finddup_#in~_j#1.base|) (<= 1 |ULTIMATE.start_finddup_~n#1|) (<= 1 |ULTIMATE.start_mkdup_#in~n#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset| 0) (<= |ULTIMATE.start_finddup_#in~_j#1.offset| 0) (<= 0 (+ (* |ULTIMATE.start_finddup_~i~1#1| 4) |ULTIMATE.start_finddup_~a#1.offset|)) (= |#NULL.base| 0) (= |ULTIMATE.start_main_~#i~2#1.offset| 0))' at error location [2022-12-14 07:15:46,161 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:15:46,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 07:15:46,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2022-12-14 07:15:46,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299797008] [2022-12-14 07:15:46,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 07:15:46,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 07:15:46,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:15:46,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 07:15:46,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1784, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 07:15:46,163 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 21 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 20 states have internal predecessors, (29), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 07:15:48,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:15:48,642 INFO L93 Difference]: Finished difference Result 213 states and 254 transitions. [2022-12-14 07:15:48,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 07:15:48,643 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 20 states have internal predecessors, (29), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 25 [2022-12-14 07:15:48,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:15:48,643 INFO L225 Difference]: With dead ends: 213 [2022-12-14 07:15:48,643 INFO L226 Difference]: Without dead ends: 213 [2022-12-14 07:15:48,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=380, Invalid=3042, Unknown=0, NotChecked=0, Total=3422 [2022-12-14 07:15:48,644 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 459 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 07:15:48,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 576 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 07:15:48,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-12-14 07:15:48,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 108. [2022-12-14 07:15:48,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 91 states have internal predecessors, (102), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 07:15:48,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 129 transitions. [2022-12-14 07:15:48,648 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 129 transitions. Word has length 25 [2022-12-14 07:15:48,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:15:48,649 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 129 transitions. [2022-12-14 07:15:48,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 20 states have internal predecessors, (29), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 07:15:48,649 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 129 transitions. [2022-12-14 07:15:48,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 07:15:48,649 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:15:48,649 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:15:48,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 07:15:48,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:15:48,851 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:15:48,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:15:48,852 INFO L85 PathProgramCache]: Analyzing trace with hash -618514571, now seen corresponding path program 1 times [2022-12-14 07:15:48,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:15:48,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636929243] [2022-12-14 07:15:48,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:48,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:15:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:48,913 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:15:48,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:15:48,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636929243] [2022-12-14 07:15:48,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636929243] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:15:48,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543804783] [2022-12-14 07:15:48,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:48,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:15:48,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:15:48,914 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:15:48,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 07:15:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:48,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 07:15:48,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:15:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:15:48,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:15:49,009 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:15:49,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543804783] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:15:49,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [78498638] [2022-12-14 07:15:49,012 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 07:15:49,012 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:15:49,012 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:15:49,012 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:15:49,012 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:15:49,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 07:15:49,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,078 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 22 [2022-12-14 07:15:49,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,114 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:49,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:49,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,155 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:49,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:49,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,240 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:49,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:49,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,292 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:49,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:49,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,393 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:49,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:49,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,456 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:49,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:49,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:49,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-12-14 07:15:49,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:49,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-12-14 07:15:49,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:49,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:49,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 63 [2022-12-14 07:15:51,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:51,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:51,123 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:51,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:51,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:51,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:51,177 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:51,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:51,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:51,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:51,223 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:51,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:51,240 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-12-14 07:15:51,250 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:15:55,615 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3288#(and (<= |ULTIMATE.start_mkdup_~a#1.offset| 0) (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 0 |ULTIMATE.start_finddup_~_i#1.offset|) (<= 0 |ULTIMATE.start_main_~#i~2#1.base|) (= |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1| 4) (<= |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934588) (<= |ULTIMATE.start_finddup_#in~_i#1.offset| 0) (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= 0 |ULTIMATE.start_finddup_#in~_i#1.offset|) (<= |ULTIMATE.start_mkdup_~j~0#1| 2147483647) (<= 0 |ULTIMATE.start_mkdup_~a#1.offset|) (<= |ULTIMATE.start_mkdup_~i~0#1| 2147483647) (<= |ULTIMATE.start_finddup_~a#1.offset| 0) (<= |ULTIMATE.start_mkdup_~n#1| 2147483647) (<= |ULTIMATE.start_mkdup_#in~a#1.offset| 0) (<= 0 (+ |ULTIMATE.start_mkdup_~x~0#1| 2147483648)) (<= |ULTIMATE.start_finddup_~_i#1.offset| 0) (<= 1 |ULTIMATE.start_finddup_#in~n#1|) (<= |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483647) (<= 0 |ULTIMATE.start_finddup_~a#1.offset|) (<= 1 |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1|) (<= 1 |ULTIMATE.start_finddup_~j~1#1|) (<= 0 |ULTIMATE.start_finddup_~i~1#1|) (<= 0 |ULTIMATE.start_finddup_#in~_j#1.offset|) (<= 0 (+ |ULTIMATE.start_mkdup_~j~0#1| 2147483648)) (<= 0 |ULTIMATE.start_finddup_#in~_i#1.base|) (<= |ULTIMATE.start_mkdup_#in~n#1| 2147483647) (<= 0 |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset|) (<= 4 |ULTIMATE.start_#Ultimate.meminit_#product#1|) (<= |ULTIMATE.start_mkdup_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_mkdup_~n#1|) (<= 0 |ULTIMATE.start_finddup_~_i#1.base|) (= |ULTIMATE.start_main_#t~malloc13#1.offset| 0) (<= |ULTIMATE.start_finddup_~n#1| 2147483647) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_finddup_#in~n#1| 2147483647) (<= |ULTIMATE.start_finddup_#in~a#1.offset| 0) (= |ULTIMATE.start_main_~#j~2#1.offset| 0) (<= 0 |ULTIMATE.start_finddup_~_j#1.offset|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_mkdup_#in~a#1.offset|) (<= 0 |ULTIMATE.start_finddup_~_j#1.base|) (<= 0 |ULTIMATE.start_main_~#j~2#1.base|) (<= |ULTIMATE.start_finddup_~_j#1.offset| 0) (<= 0 (+ |ULTIMATE.start_mkdup_~i~0#1| 2147483648)) (<= 0 |ULTIMATE.start_finddup_#in~a#1.offset|) (<= 0 |ULTIMATE.start_finddup_#in~_j#1.base|) (<= 1 |ULTIMATE.start_finddup_~n#1|) (<= 1 |ULTIMATE.start_mkdup_#in~n#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~a~0#1.offset| 0) (not (<= (+ (* |ULTIMATE.start_finddup_~i~1#1| 4) |ULTIMATE.start_finddup_~a#1.offset| 4) (select |#length| |ULTIMATE.start_finddup_~a#1.base|))) (<= |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset| 0) (<= |ULTIMATE.start_finddup_#in~_j#1.offset| 0) (= |#NULL.base| 0) (= |ULTIMATE.start_main_~#i~2#1.offset| 0))' at error location [2022-12-14 07:15:55,615 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:15:55,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:15:55,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-12-14 07:15:55,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486316367] [2022-12-14 07:15:55,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:15:55,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 07:15:55,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:15:55,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 07:15:55,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2022-12-14 07:15:55,617 INFO L87 Difference]: Start difference. First operand 108 states and 129 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 07:15:55,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:15:55,734 INFO L93 Difference]: Finished difference Result 366 states and 434 transitions. [2022-12-14 07:15:55,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 07:15:55,735 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 26 [2022-12-14 07:15:55,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:15:55,736 INFO L225 Difference]: With dead ends: 366 [2022-12-14 07:15:55,736 INFO L226 Difference]: Without dead ends: 366 [2022-12-14 07:15:55,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2022-12-14 07:15:55,737 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 294 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:15:55,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 512 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:15:55,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-12-14 07:15:55,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 118. [2022-12-14 07:15:55,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 75 states have (on average 1.5866666666666667) internal successors, (119), 101 states have internal predecessors, (119), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 07:15:55,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 146 transitions. [2022-12-14 07:15:55,745 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 146 transitions. Word has length 26 [2022-12-14 07:15:55,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:15:55,746 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 146 transitions. [2022-12-14 07:15:55,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 07:15:55,746 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 146 transitions. [2022-12-14 07:15:55,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 07:15:55,747 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:15:55,747 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 07:15:55,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 07:15:55,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 07:15:55,949 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:15:55,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:15:55,950 INFO L85 PathProgramCache]: Analyzing trace with hash -641204124, now seen corresponding path program 1 times [2022-12-14 07:15:55,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:15:55,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024770240] [2022-12-14 07:15:55,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:55,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:15:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:56,029 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:15:56,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:15:56,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024770240] [2022-12-14 07:15:56,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024770240] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:15:56,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108516711] [2022-12-14 07:15:56,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:56,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:15:56,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:15:56,030 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:15:56,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 07:15:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:15:56,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 07:15:56,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:15:56,090 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:15:56,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:15:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:15:56,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108516711] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:15:56,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [20074302] [2022-12-14 07:15:56,110 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-12-14 07:15:56,110 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:15:56,110 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:15:56,110 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:15:56,110 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:15:56,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,144 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 22 [2022-12-14 07:15:56,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 07:15:56,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,205 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:56,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:56,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,252 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:56,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:56,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,365 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:56,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:56,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,430 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:56,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:56,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,520 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:56,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:56,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,578 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:56,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:56,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:56,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-12-14 07:15:56,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:56,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-12-14 07:15:56,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:56,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:56,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 63 [2022-12-14 07:15:58,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:58,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:58,208 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:58,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:58,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:58,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:58,251 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:58,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:58,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:58,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:58,292 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:15:58,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:15:58,306 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 10 for LOIs [2022-12-14 07:15:58,309 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-12-14 07:15:58,317 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:16:03,146 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3965#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:16:03,146 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:16:03,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:16:03,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-12-14 07:16:03,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780783] [2022-12-14 07:16:03,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:16:03,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:16:03,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:16:03,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:16:03,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2022-12-14 07:16:03,147 INFO L87 Difference]: Start difference. First operand 118 states and 146 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-12-14 07:16:03,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:16:03,205 INFO L93 Difference]: Finished difference Result 163 states and 195 transitions. [2022-12-14 07:16:03,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:16:03,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 29 [2022-12-14 07:16:03,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:16:03,206 INFO L225 Difference]: With dead ends: 163 [2022-12-14 07:16:03,206 INFO L226 Difference]: Without dead ends: 163 [2022-12-14 07:16:03,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2022-12-14 07:16:03,206 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 103 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:16:03,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 259 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:16:03,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-12-14 07:16:03,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 118. [2022-12-14 07:16:03,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 75 states have (on average 1.56) internal successors, (117), 101 states have internal predecessors, (117), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 07:16:03,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 144 transitions. [2022-12-14 07:16:03,210 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 144 transitions. Word has length 29 [2022-12-14 07:16:03,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:16:03,210 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 144 transitions. [2022-12-14 07:16:03,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-12-14 07:16:03,210 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 144 transitions. [2022-12-14 07:16:03,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 07:16:03,210 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:03,210 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 07:16:03,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 07:16:03,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 07:16:03,412 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:16:03,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:03,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1790809280, now seen corresponding path program 1 times [2022-12-14 07:16:03,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:03,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059844163] [2022-12-14 07:16:03,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:03,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:03,459 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:16:03,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:03,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059844163] [2022-12-14 07:16:03,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059844163] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:16:03,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:16:03,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 07:16:03,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710113087] [2022-12-14 07:16:03,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:16:03,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 07:16:03,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:16:03,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 07:16:03,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 07:16:03,461 INFO L87 Difference]: Start difference. First operand 118 states and 144 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-12-14 07:16:03,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:16:03,529 INFO L93 Difference]: Finished difference Result 167 states and 198 transitions. [2022-12-14 07:16:03,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:16:03,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 29 [2022-12-14 07:16:03,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:16:03,531 INFO L225 Difference]: With dead ends: 167 [2022-12-14 07:16:03,531 INFO L226 Difference]: Without dead ends: 167 [2022-12-14 07:16:03,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:16:03,532 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 86 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:16:03,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 473 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:16:03,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-12-14 07:16:03,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 124. [2022-12-14 07:16:03,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 79 states have (on average 1.5316455696202531) internal successors, (121), 106 states have internal predecessors, (121), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:16:03,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 150 transitions. [2022-12-14 07:16:03,537 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 150 transitions. Word has length 29 [2022-12-14 07:16:03,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:16:03,537 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 150 transitions. [2022-12-14 07:16:03,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-12-14 07:16:03,538 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 150 transitions. [2022-12-14 07:16:03,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 07:16:03,538 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:03,538 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:16:03,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 07:16:03,539 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:16:03,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:03,539 INFO L85 PathProgramCache]: Analyzing trace with hash -284603141, now seen corresponding path program 2 times [2022-12-14 07:16:03,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:03,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676100884] [2022-12-14 07:16:03,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:03,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:04,191 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 07:16:04,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:04,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676100884] [2022-12-14 07:16:04,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676100884] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:16:04,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398491417] [2022-12-14 07:16:04,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:16:04,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:16:04,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:16:04,192 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:16:04,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 07:16:04,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 07:16:04,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:16:04,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-14 07:16:04,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:16:04,261 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 07:16:04,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 07:16:04,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:04,541 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 19 [2022-12-14 07:16:04,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2022-12-14 07:16:04,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:04,765 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:16:04,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 62 [2022-12-14 07:16:05,018 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 07:16:05,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:16:07,327 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:16:07,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 409 treesize of output 369 [2022-12-14 07:16:08,506 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 07:16:08,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398491417] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:16:08,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2013168106] [2022-12-14 07:16:08,508 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-12-14 07:16:08,508 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:16:08,508 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:16:08,508 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:16:08,508 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:16:08,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:08,545 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 22 [2022-12-14 07:16:08,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:08,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:08,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:08,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 07:16:08,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:08,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:08,604 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:08,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:08,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:08,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:08,648 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:08,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:08,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:08,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:08,725 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:08,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:08,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:08,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:08,780 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:08,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:08,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:08,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:08,872 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:08,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:08,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:08,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:08,934 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:08,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:09,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:09,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:09,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-12-14 07:16:09,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:09,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:09,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-12-14 07:16:09,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:09,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:09,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:09,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:09,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:09,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:09,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:09,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:09,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:09,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:09,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:09,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:09,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:09,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 63 [2022-12-14 07:16:10,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:10,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:10,641 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:10,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:10,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:10,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:10,687 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:10,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:10,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:10,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:10,737 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:10,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:10,756 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 10 for LOIs [2022-12-14 07:16:10,759 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-12-14 07:16:10,769 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:16:18,156 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4785#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:16:18,156 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:16:18,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:16:18,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 35 [2022-12-14 07:16:18,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046028292] [2022-12-14 07:16:18,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:16:18,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 07:16:18,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:16:18,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 07:16:18,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=2601, Unknown=2, NotChecked=0, Total=2862 [2022-12-14 07:16:18,157 INFO L87 Difference]: Start difference. First operand 124 states and 150 transitions. Second operand has 35 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 35 states have internal predecessors, (49), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) [2022-12-14 07:16:20,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 07:16:25,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:16:25,423 INFO L93 Difference]: Finished difference Result 323 states and 382 transitions. [2022-12-14 07:16:25,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 07:16:25,424 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 35 states have internal predecessors, (49), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) Word has length 31 [2022-12-14 07:16:25,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:16:25,425 INFO L225 Difference]: With dead ends: 323 [2022-12-14 07:16:25,425 INFO L226 Difference]: Without dead ends: 322 [2022-12-14 07:16:25,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=602, Invalid=4225, Unknown=3, NotChecked=0, Total=4830 [2022-12-14 07:16:25,426 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 1437 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 222 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1438 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 2607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:16:25,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1438 Valid, 1449 Invalid, 2607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 2384 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-12-14 07:16:25,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-12-14 07:16:25,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 126. [2022-12-14 07:16:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 81 states have (on average 1.5061728395061729) internal successors, (122), 108 states have internal predecessors, (122), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:16:25,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 151 transitions. [2022-12-14 07:16:25,431 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 151 transitions. Word has length 31 [2022-12-14 07:16:25,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:16:25,431 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 151 transitions. [2022-12-14 07:16:25,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 35 states have internal predecessors, (49), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) [2022-12-14 07:16:25,432 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 151 transitions. [2022-12-14 07:16:25,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 07:16:25,432 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:25,432 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:16:25,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 07:16:25,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:16:25,633 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:16:25,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:25,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1798148022, now seen corresponding path program 2 times [2022-12-14 07:16:25,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:25,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617992093] [2022-12-14 07:16:25,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:25,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:16:25,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:25,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617992093] [2022-12-14 07:16:25,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617992093] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:16:25,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906375814] [2022-12-14 07:16:25,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:16:25,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:16:25,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:16:25,775 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:16:25,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 07:16:25,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 07:16:25,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:16:25,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 07:16:25,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:16:25,957 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 07:16:25,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:16:26,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-14 07:16:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 07:16:26,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906375814] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:16:26,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2070345261] [2022-12-14 07:16:26,099 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 07:16:26,099 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:16:26,099 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:16:26,099 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:16:26,099 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:16:26,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 07:16:26,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,150 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 22 [2022-12-14 07:16:26,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,185 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:26,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:26,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,228 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:26,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:26,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,303 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:26,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:26,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,359 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:26,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:26,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,453 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:26,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:26,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,512 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:26,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:26,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:26,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-12-14 07:16:26,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:26,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-12-14 07:16:26,684 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:26,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:26,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 63 [2022-12-14 07:16:28,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:28,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:28,231 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:28,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:28,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:28,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:28,282 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:28,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:28,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:28,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:28,327 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:28,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:28,347 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-12-14 07:16:28,356 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:16:32,544 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5479#(and (<= |ULTIMATE.start_mkdup_~a#1.offset| 0) (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 0 |ULTIMATE.start_finddup_~_i#1.offset|) (<= 0 |ULTIMATE.start_main_~#i~2#1.base|) (= |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1| 4) (<= |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934588) (<= |ULTIMATE.start_finddup_#in~_i#1.offset| 0) (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= 0 |ULTIMATE.start_finddup_#in~_i#1.offset|) (<= |ULTIMATE.start_mkdup_~j~0#1| 2147483647) (<= 0 |ULTIMATE.start_mkdup_~a#1.offset|) (<= |ULTIMATE.start_mkdup_~i~0#1| 2147483647) (<= |ULTIMATE.start_finddup_~a#1.offset| 0) (<= |ULTIMATE.start_mkdup_~n#1| 2147483647) (<= |ULTIMATE.start_mkdup_#in~a#1.offset| 0) (<= 0 (+ |ULTIMATE.start_mkdup_~x~0#1| 2147483648)) (<= |ULTIMATE.start_finddup_~_i#1.offset| 0) (<= 1 |ULTIMATE.start_finddup_#in~n#1|) (<= |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483647) (<= 0 |ULTIMATE.start_finddup_~a#1.offset|) (<= 1 |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1|) (<= 1 |ULTIMATE.start_finddup_~j~1#1|) (<= 0 |ULTIMATE.start_finddup_~i~1#1|) (<= 0 |ULTIMATE.start_finddup_#in~_j#1.offset|) (<= 0 (+ |ULTIMATE.start_mkdup_~j~0#1| 2147483648)) (<= 0 |ULTIMATE.start_finddup_#in~_i#1.base|) (<= |ULTIMATE.start_mkdup_#in~n#1| 2147483647) (<= 0 |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset|) (<= 4 |ULTIMATE.start_#Ultimate.meminit_#product#1|) (<= |ULTIMATE.start_mkdup_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_mkdup_~n#1|) (<= 0 |ULTIMATE.start_finddup_~_i#1.base|) (= |ULTIMATE.start_main_#t~malloc13#1.offset| 0) (<= |ULTIMATE.start_finddup_~n#1| 2147483647) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_finddup_#in~n#1| 2147483647) (<= |ULTIMATE.start_finddup_#in~a#1.offset| 0) (= |ULTIMATE.start_main_~#j~2#1.offset| 0) (<= 0 |ULTIMATE.start_finddup_~_j#1.offset|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_mkdup_#in~a#1.offset|) (<= 0 |ULTIMATE.start_finddup_~_j#1.base|) (<= 0 |ULTIMATE.start_main_~#j~2#1.base|) (<= |ULTIMATE.start_finddup_~_j#1.offset| 0) (<= 0 (+ |ULTIMATE.start_mkdup_~i~0#1| 2147483648)) (<= 0 |ULTIMATE.start_finddup_#in~a#1.offset|) (<= 0 |ULTIMATE.start_finddup_#in~_j#1.base|) (<= 1 |ULTIMATE.start_finddup_~n#1|) (<= 1 |ULTIMATE.start_mkdup_#in~n#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~a~0#1.offset| 0) (not (<= (+ (* |ULTIMATE.start_finddup_~i~1#1| 4) |ULTIMATE.start_finddup_~a#1.offset| 4) (select |#length| |ULTIMATE.start_finddup_~a#1.base|))) (<= |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset| 0) (<= |ULTIMATE.start_finddup_#in~_j#1.offset| 0) (= |#NULL.base| 0) (= |ULTIMATE.start_main_~#i~2#1.offset| 0))' at error location [2022-12-14 07:16:32,544 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:16:32,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:16:32,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-12-14 07:16:32,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305610144] [2022-12-14 07:16:32,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:16:32,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 07:16:32,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:16:32,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 07:16:32,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1058, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 07:16:32,546 INFO L87 Difference]: Start difference. First operand 126 states and 151 transitions. Second operand has 20 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 20 states have internal predecessors, (49), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-12-14 07:16:33,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:16:33,198 INFO L93 Difference]: Finished difference Result 259 states and 303 transitions. [2022-12-14 07:16:33,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 07:16:33,199 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 20 states have internal predecessors, (49), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 30 [2022-12-14 07:16:33,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:16:33,200 INFO L225 Difference]: With dead ends: 259 [2022-12-14 07:16:33,200 INFO L226 Difference]: Without dead ends: 259 [2022-12-14 07:16:33,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=391, Invalid=1865, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 07:16:33,201 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 907 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 07:16:33,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 460 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 07:16:33,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-12-14 07:16:33,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 125. [2022-12-14 07:16:33,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 81 states have (on average 1.4814814814814814) internal successors, (120), 107 states have internal predecessors, (120), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:16:33,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 149 transitions. [2022-12-14 07:16:33,208 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 149 transitions. Word has length 30 [2022-12-14 07:16:33,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:16:33,208 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 149 transitions. [2022-12-14 07:16:33,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 20 states have internal predecessors, (49), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-12-14 07:16:33,208 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 149 transitions. [2022-12-14 07:16:33,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 07:16:33,209 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:33,209 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:16:33,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 07:16:33,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 07:16:33,411 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:16:33,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:33,412 INFO L85 PathProgramCache]: Analyzing trace with hash -91986188, now seen corresponding path program 1 times [2022-12-14 07:16:33,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:33,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992667379] [2022-12-14 07:16:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:33,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:16:33,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:33,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992667379] [2022-12-14 07:16:33,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992667379] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:16:33,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297036030] [2022-12-14 07:16:33,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:33,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:16:33,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:16:33,564 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:16:33,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 07:16:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:33,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 07:16:33,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:16:33,712 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:16:33,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:16:33,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2022-12-14 07:16:33,827 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:16:33,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297036030] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:16:33,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [925763755] [2022-12-14 07:16:33,828 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 07:16:33,829 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:16:33,829 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:16:33,829 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:16:33,829 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:16:33,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:33,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:33,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:33,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 07:16:33,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:33,876 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 22 [2022-12-14 07:16:33,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:33,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:33,916 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:33,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:33,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:33,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:33,963 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:33,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:34,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,043 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:34,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:34,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,095 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:34,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:34,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,176 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:34,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:34,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,227 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:34,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:34,294 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:34,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-12-14 07:16:34,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,352 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 43 treesize of output 39 [2022-12-14 07:16:34,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:34,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:34,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 63 [2022-12-14 07:16:35,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:35,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:35,803 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:35,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:35,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:35,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:35,845 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:35,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:35,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:35,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:35,886 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:35,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:35,901 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-12-14 07:16:35,909 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:16:40,817 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6106#(and (<= |ULTIMATE.start_mkdup_~a#1.offset| 0) (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= (+ (* |ULTIMATE.start_finddup_~i~1#1| 4) |ULTIMATE.start_finddup_~a#1.offset| 4) (select |#length| |ULTIMATE.start_finddup_~a#1.base|)) (<= 0 |ULTIMATE.start_finddup_~_i#1.offset|) (<= 0 |ULTIMATE.start_main_~#i~2#1.base|) (= |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1| 4) (<= |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934588) (<= |ULTIMATE.start_finddup_#in~_i#1.offset| 0) (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= 0 |ULTIMATE.start_finddup_#in~_i#1.offset|) (<= |ULTIMATE.start_mkdup_~j~0#1| 2147483647) (<= 0 |ULTIMATE.start_mkdup_~a#1.offset|) (<= |ULTIMATE.start_mkdup_~i~0#1| 2147483647) (<= |ULTIMATE.start_finddup_~a#1.offset| 0) (<= |ULTIMATE.start_mkdup_~n#1| 2147483647) (not (<= (+ (* |ULTIMATE.start_finddup_~j~1#1| 4) |ULTIMATE.start_finddup_~a#1.offset| 4) (select |#length| |ULTIMATE.start_finddup_~a#1.base|))) (<= |ULTIMATE.start_mkdup_#in~a#1.offset| 0) (<= 0 (+ |ULTIMATE.start_mkdup_~x~0#1| 2147483648)) (<= |ULTIMATE.start_finddup_~_i#1.offset| 0) (<= 1 |ULTIMATE.start_finddup_#in~n#1|) (<= |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483647) (<= 0 |ULTIMATE.start_finddup_~a#1.offset|) (<= 1 |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1|) (= (select (select |#memory_int| |ULTIMATE.start_finddup_~a#1.base|) (+ (* |ULTIMATE.start_finddup_~i~1#1| 4) |ULTIMATE.start_finddup_~a#1.offset|)) |ULTIMATE.start_finddup_#t~mem10#1|) (<= 0 |ULTIMATE.start_finddup_#in~_j#1.offset|) (<= 0 (+ |ULTIMATE.start_mkdup_~j~0#1| 2147483648)) (<= 0 |ULTIMATE.start_finddup_#in~_i#1.base|) (<= |ULTIMATE.start_mkdup_#in~n#1| 2147483647) (<= 0 |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset|) (<= 4 |ULTIMATE.start_#Ultimate.meminit_#product#1|) (<= |ULTIMATE.start_mkdup_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_mkdup_~n#1|) (<= 0 |ULTIMATE.start_finddup_~_i#1.base|) (= |ULTIMATE.start_main_#t~malloc13#1.offset| 0) (<= |ULTIMATE.start_finddup_~n#1| 2147483647) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_finddup_#in~n#1| 2147483647) (<= |ULTIMATE.start_finddup_#in~a#1.offset| 0) (= |ULTIMATE.start_main_~#j~2#1.offset| 0) (<= 0 |ULTIMATE.start_finddup_~_j#1.offset|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_mkdup_#in~a#1.offset|) (<= 0 |ULTIMATE.start_finddup_~_j#1.base|) (<= 0 |ULTIMATE.start_main_~#j~2#1.base|) (<= |ULTIMATE.start_finddup_~_j#1.offset| 0) (= (select |#valid| |ULTIMATE.start_finddup_~a#1.base|) 1) (<= 0 (+ |ULTIMATE.start_mkdup_~i~0#1| 2147483648)) (<= 0 |ULTIMATE.start_finddup_#in~a#1.offset|) (<= 0 |ULTIMATE.start_finddup_#in~_j#1.base|) (<= 1 |ULTIMATE.start_finddup_~n#1|) (<= 1 |ULTIMATE.start_mkdup_#in~n#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset| 0) (<= |ULTIMATE.start_finddup_#in~_j#1.offset| 0) (<= 0 (+ (* |ULTIMATE.start_finddup_~i~1#1| 4) |ULTIMATE.start_finddup_~a#1.offset|)) (= |#NULL.base| 0) (= |ULTIMATE.start_main_~#i~2#1.offset| 0))' at error location [2022-12-14 07:16:40,817 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:16:40,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:16:40,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-12-14 07:16:40,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85963257] [2022-12-14 07:16:40,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:16:40,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 07:16:40,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:16:40,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 07:16:40,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1267, Unknown=0, NotChecked=0, Total=1482 [2022-12-14 07:16:40,819 INFO L87 Difference]: Start difference. First operand 125 states and 149 transitions. Second operand has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-12-14 07:16:41,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:16:41,658 INFO L93 Difference]: Finished difference Result 297 states and 341 transitions. [2022-12-14 07:16:41,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 07:16:41,658 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 31 [2022-12-14 07:16:41,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:16:41,659 INFO L225 Difference]: With dead ends: 297 [2022-12-14 07:16:41,659 INFO L226 Difference]: Without dead ends: 297 [2022-12-14 07:16:41,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=457, Invalid=2299, Unknown=0, NotChecked=0, Total=2756 [2022-12-14 07:16:41,660 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 1053 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 07:16:41,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 717 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 07:16:41,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-12-14 07:16:41,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 125. [2022-12-14 07:16:41,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 81 states have (on average 1.4691358024691359) internal successors, (119), 107 states have internal predecessors, (119), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:16:41,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions. [2022-12-14 07:16:41,664 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 31 [2022-12-14 07:16:41,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:16:41,664 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 148 transitions. [2022-12-14 07:16:41,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-12-14 07:16:41,664 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions. [2022-12-14 07:16:41,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 07:16:41,665 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:41,665 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:16:41,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 07:16:41,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 07:16:41,867 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:16:41,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:41,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1795586004, now seen corresponding path program 1 times [2022-12-14 07:16:41,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:41,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493714559] [2022-12-14 07:16:41,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:41,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:41,943 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 07:16:41,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:41,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493714559] [2022-12-14 07:16:41,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493714559] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:16:41,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:16:41,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:16:41,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315576791] [2022-12-14 07:16:41,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:16:41,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:16:41,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:16:41,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:16:41,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:16:41,945 INFO L87 Difference]: Start difference. First operand 125 states and 148 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 07:16:41,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:16:41,986 INFO L93 Difference]: Finished difference Result 124 states and 147 transitions. [2022-12-14 07:16:41,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:16:41,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2022-12-14 07:16:41,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:16:41,988 INFO L225 Difference]: With dead ends: 124 [2022-12-14 07:16:41,988 INFO L226 Difference]: Without dead ends: 124 [2022-12-14 07:16:41,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:16:41,989 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 46 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:16:41,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 66 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:16:41,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-12-14 07:16:41,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-12-14 07:16:41,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 81 states have (on average 1.4567901234567902) internal successors, (118), 106 states have internal predecessors, (118), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:16:41,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 147 transitions. [2022-12-14 07:16:41,994 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 147 transitions. Word has length 33 [2022-12-14 07:16:41,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:16:41,994 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 147 transitions. [2022-12-14 07:16:41,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 07:16:41,995 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 147 transitions. [2022-12-14 07:16:41,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 07:16:41,995 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:41,995 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:16:41,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 07:16:41,995 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:16:41,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:41,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1795586005, now seen corresponding path program 1 times [2022-12-14 07:16:41,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:41,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061388400] [2022-12-14 07:16:41,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:41,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:42,102 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 07:16:42,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:42,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061388400] [2022-12-14 07:16:42,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061388400] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:16:42,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:16:42,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:16:42,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757714579] [2022-12-14 07:16:42,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:16:42,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:16:42,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:16:42,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:16:42,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:16:42,104 INFO L87 Difference]: Start difference. First operand 124 states and 147 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 07:16:42,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:16:42,141 INFO L93 Difference]: Finished difference Result 123 states and 146 transitions. [2022-12-14 07:16:42,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:16:42,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2022-12-14 07:16:42,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:16:42,142 INFO L225 Difference]: With dead ends: 123 [2022-12-14 07:16:42,142 INFO L226 Difference]: Without dead ends: 123 [2022-12-14 07:16:42,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:16:42,143 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 47 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:16:42,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 64 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:16:42,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-12-14 07:16:42,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2022-12-14 07:16:42,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 81 states have (on average 1.4444444444444444) internal successors, (117), 105 states have internal predecessors, (117), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:16:42,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 146 transitions. [2022-12-14 07:16:42,147 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 146 transitions. Word has length 33 [2022-12-14 07:16:42,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:16:42,147 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 146 transitions. [2022-12-14 07:16:42,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 07:16:42,148 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 146 transitions. [2022-12-14 07:16:42,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 07:16:42,148 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:42,148 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:16:42,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 07:16:42,148 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:16:42,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:42,149 INFO L85 PathProgramCache]: Analyzing trace with hash -171408707, now seen corresponding path program 1 times [2022-12-14 07:16:42,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:42,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244926400] [2022-12-14 07:16:42,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:42,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:42,203 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 07:16:42,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:42,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244926400] [2022-12-14 07:16:42,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244926400] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:16:42,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:16:42,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:16:42,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136656576] [2022-12-14 07:16:42,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:16:42,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:16:42,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:16:42,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:16:42,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:16:42,205 INFO L87 Difference]: Start difference. First operand 123 states and 146 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 07:16:42,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:16:42,239 INFO L93 Difference]: Finished difference Result 122 states and 145 transitions. [2022-12-14 07:16:42,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:16:42,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2022-12-14 07:16:42,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:16:42,240 INFO L225 Difference]: With dead ends: 122 [2022-12-14 07:16:42,240 INFO L226 Difference]: Without dead ends: 122 [2022-12-14 07:16:42,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:16:42,241 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 43 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:16:42,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 65 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:16:42,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-12-14 07:16:42,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2022-12-14 07:16:42,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 104 states have internal predecessors, (116), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:16:42,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 145 transitions. [2022-12-14 07:16:42,245 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 145 transitions. Word has length 34 [2022-12-14 07:16:42,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:16:42,246 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 145 transitions. [2022-12-14 07:16:42,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 07:16:42,246 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 145 transitions. [2022-12-14 07:16:42,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 07:16:42,246 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:42,246 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:16:42,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 07:16:42,247 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:16:42,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:42,247 INFO L85 PathProgramCache]: Analyzing trace with hash -171408706, now seen corresponding path program 1 times [2022-12-14 07:16:42,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:42,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552410472] [2022-12-14 07:16:42,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:42,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:42,326 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 07:16:42,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:42,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552410472] [2022-12-14 07:16:42,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552410472] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:16:42,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:16:42,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:16:42,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404743017] [2022-12-14 07:16:42,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:16:42,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:16:42,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:16:42,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:16:42,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:16:42,328 INFO L87 Difference]: Start difference. First operand 122 states and 145 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 07:16:42,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:16:42,367 INFO L93 Difference]: Finished difference Result 121 states and 144 transitions. [2022-12-14 07:16:42,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:16:42,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2022-12-14 07:16:42,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:16:42,369 INFO L225 Difference]: With dead ends: 121 [2022-12-14 07:16:42,369 INFO L226 Difference]: Without dead ends: 121 [2022-12-14 07:16:42,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:16:42,369 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 44 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:16:42,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 63 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:16:42,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-12-14 07:16:42,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-12-14 07:16:42,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 81 states have (on average 1.4197530864197532) internal successors, (115), 103 states have internal predecessors, (115), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:16:42,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 144 transitions. [2022-12-14 07:16:42,374 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 144 transitions. Word has length 34 [2022-12-14 07:16:42,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:16:42,374 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 144 transitions. [2022-12-14 07:16:42,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 07:16:42,374 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 144 transitions. [2022-12-14 07:16:42,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 07:16:42,375 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:42,375 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:16:42,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 07:16:42,375 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:16:42,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:42,375 INFO L85 PathProgramCache]: Analyzing trace with hash 2081921806, now seen corresponding path program 1 times [2022-12-14 07:16:42,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:42,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572091007] [2022-12-14 07:16:42,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:42,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:16:42,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:42,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572091007] [2022-12-14 07:16:42,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572091007] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:16:42,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:16:42,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 07:16:42,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647605803] [2022-12-14 07:16:42,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:16:42,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 07:16:42,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:16:42,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 07:16:42,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-14 07:16:42,595 INFO L87 Difference]: Start difference. First operand 121 states and 144 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 07:16:42,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:16:42,847 INFO L93 Difference]: Finished difference Result 164 states and 189 transitions. [2022-12-14 07:16:42,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 07:16:42,847 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2022-12-14 07:16:42,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:16:42,848 INFO L225 Difference]: With dead ends: 164 [2022-12-14 07:16:42,848 INFO L226 Difference]: Without dead ends: 164 [2022-12-14 07:16:42,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-12-14 07:16:42,848 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 142 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:16:42,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 388 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:16:42,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-12-14 07:16:42,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 123. [2022-12-14 07:16:42,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 83 states have (on average 1.4216867469879517) internal successors, (118), 104 states have internal predecessors, (118), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:16:42,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 147 transitions. [2022-12-14 07:16:42,851 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 147 transitions. Word has length 36 [2022-12-14 07:16:42,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:16:42,851 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 147 transitions. [2022-12-14 07:16:42,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 07:16:42,852 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 147 transitions. [2022-12-14 07:16:42,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-14 07:16:42,852 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:42,852 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:16:42,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 07:16:42,852 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:16:42,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:42,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1015048301, now seen corresponding path program 2 times [2022-12-14 07:16:42,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:42,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569076519] [2022-12-14 07:16:42,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:42,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:42,914 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:16:42,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:42,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569076519] [2022-12-14 07:16:42,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569076519] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:16:42,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691799084] [2022-12-14 07:16:42,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:16:42,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:16:42,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:16:42,915 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:16:42,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 07:16:42,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 07:16:42,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:16:42,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 07:16:42,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:16:43,071 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 07:16:43,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:16:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 07:16:43,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691799084] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:16:43,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [512761948] [2022-12-14 07:16:43,265 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 07:16:43,265 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:16:43,265 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:16:43,266 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:16:43,266 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:16:43,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 07:16:43,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,335 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 22 [2022-12-14 07:16:43,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,377 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:43,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:43,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,425 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:43,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:43,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,495 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:43,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:43,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,559 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:43,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:43,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,645 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:43,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:43,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,702 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:43,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:43,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:43,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-12-14 07:16:43,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:43,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-12-14 07:16:43,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:43,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:43,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 63 [2022-12-14 07:16:45,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:45,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:45,316 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:45,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:45,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:45,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:45,358 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:45,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:45,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:45,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:45,403 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:45,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:45,423 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-12-14 07:16:45,433 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:16:50,614 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8097#(and (<= |ULTIMATE.start_mkdup_~a#1.offset| 0) (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= (+ (* |ULTIMATE.start_finddup_~i~1#1| 4) |ULTIMATE.start_finddup_~a#1.offset| 4) (select |#length| |ULTIMATE.start_finddup_~a#1.base|)) (<= 0 |ULTIMATE.start_finddup_~_i#1.offset|) (<= 0 |ULTIMATE.start_main_~#i~2#1.base|) (= |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1| 4) (<= |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934588) (<= |ULTIMATE.start_finddup_#in~_i#1.offset| 0) (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= 0 |ULTIMATE.start_finddup_#in~_i#1.offset|) (<= |ULTIMATE.start_mkdup_~j~0#1| 2147483647) (<= 0 |ULTIMATE.start_mkdup_~a#1.offset|) (<= |ULTIMATE.start_mkdup_~i~0#1| 2147483647) (<= |ULTIMATE.start_finddup_~a#1.offset| 0) (<= |ULTIMATE.start_mkdup_~n#1| 2147483647) (not (<= (+ (* |ULTIMATE.start_finddup_~j~1#1| 4) |ULTIMATE.start_finddup_~a#1.offset| 4) (select |#length| |ULTIMATE.start_finddup_~a#1.base|))) (<= |ULTIMATE.start_mkdup_#in~a#1.offset| 0) (<= 0 (+ |ULTIMATE.start_mkdup_~x~0#1| 2147483648)) (<= |ULTIMATE.start_finddup_~_i#1.offset| 0) (<= 1 |ULTIMATE.start_finddup_#in~n#1|) (<= |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483647) (<= 0 |ULTIMATE.start_finddup_~a#1.offset|) (<= 1 |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1|) (= (select (select |#memory_int| |ULTIMATE.start_finddup_~a#1.base|) (+ (* |ULTIMATE.start_finddup_~i~1#1| 4) |ULTIMATE.start_finddup_~a#1.offset|)) |ULTIMATE.start_finddup_#t~mem10#1|) (<= 0 |ULTIMATE.start_finddup_#in~_j#1.offset|) (<= 0 (+ |ULTIMATE.start_mkdup_~j~0#1| 2147483648)) (<= 0 |ULTIMATE.start_finddup_#in~_i#1.base|) (<= |ULTIMATE.start_mkdup_#in~n#1| 2147483647) (<= 0 |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset|) (<= 4 |ULTIMATE.start_#Ultimate.meminit_#product#1|) (<= |ULTIMATE.start_mkdup_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_mkdup_~n#1|) (<= 0 |ULTIMATE.start_finddup_~_i#1.base|) (= |ULTIMATE.start_main_#t~malloc13#1.offset| 0) (<= |ULTIMATE.start_finddup_~n#1| 2147483647) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_finddup_#in~n#1| 2147483647) (<= |ULTIMATE.start_finddup_#in~a#1.offset| 0) (= |ULTIMATE.start_main_~#j~2#1.offset| 0) (<= 0 |ULTIMATE.start_finddup_~_j#1.offset|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_mkdup_#in~a#1.offset|) (<= 0 |ULTIMATE.start_finddup_~_j#1.base|) (<= 0 |ULTIMATE.start_main_~#j~2#1.base|) (<= |ULTIMATE.start_finddup_~_j#1.offset| 0) (= (select |#valid| |ULTIMATE.start_finddup_~a#1.base|) 1) (<= 0 (+ |ULTIMATE.start_mkdup_~i~0#1| 2147483648)) (<= 0 |ULTIMATE.start_finddup_#in~a#1.offset|) (<= 0 |ULTIMATE.start_finddup_#in~_j#1.base|) (<= 1 |ULTIMATE.start_finddup_~n#1|) (<= 1 |ULTIMATE.start_mkdup_#in~n#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset| 0) (<= |ULTIMATE.start_finddup_#in~_j#1.offset| 0) (<= 0 (+ (* |ULTIMATE.start_finddup_~i~1#1| 4) |ULTIMATE.start_finddup_~a#1.offset|)) (= |#NULL.base| 0) (= |ULTIMATE.start_main_~#i~2#1.offset| 0))' at error location [2022-12-14 07:16:50,614 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:16:50,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:16:50,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-12-14 07:16:50,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323650138] [2022-12-14 07:16:50,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:16:50,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 07:16:50,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:16:50,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 07:16:50,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1247, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 07:16:50,615 INFO L87 Difference]: Start difference. First operand 123 states and 147 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 07:16:51,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:16:51,786 INFO L93 Difference]: Finished difference Result 450 states and 521 transitions. [2022-12-14 07:16:51,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-14 07:16:51,787 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 35 [2022-12-14 07:16:51,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:16:51,788 INFO L225 Difference]: With dead ends: 450 [2022-12-14 07:16:51,788 INFO L226 Difference]: Without dead ends: 450 [2022-12-14 07:16:51,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=643, Invalid=3647, Unknown=0, NotChecked=0, Total=4290 [2022-12-14 07:16:51,789 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 1329 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 07:16:51,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1333 Valid, 918 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 07:16:51,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-12-14 07:16:51,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 138. [2022-12-14 07:16:51,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 99 states have (on average 1.404040404040404) internal successors, (139), 119 states have internal predecessors, (139), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:16:51,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 168 transitions. [2022-12-14 07:16:51,793 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 168 transitions. Word has length 35 [2022-12-14 07:16:51,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:16:51,794 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 168 transitions. [2022-12-14 07:16:51,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 07:16:51,794 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 168 transitions. [2022-12-14 07:16:51,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 07:16:51,794 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:51,794 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:16:51,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-14 07:16:51,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-14 07:16:51,995 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:16:51,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:51,995 INFO L85 PathProgramCache]: Analyzing trace with hash -43186018, now seen corresponding path program 1 times [2022-12-14 07:16:51,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:51,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082877598] [2022-12-14 07:16:51,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:51,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:16:52,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:52,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082877598] [2022-12-14 07:16:52,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082877598] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:16:52,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25914929] [2022-12-14 07:16:52,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:52,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:16:52,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:16:52,264 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:16:52,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 07:16:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:52,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-14 07:16:52,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:16:52,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-14 07:16:52,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-12-14 07:16:52,443 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 18 [2022-12-14 07:16:52,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-14 07:16:52,539 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:16:52,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:16:52,633 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_418 (Array Int Int))) (<= (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_finddup_~_j#1.base| v_ArrVal_418) |c_ULTIMATE.start_main_~#i~2#1.base|) |c_ULTIMATE.start_main_~#i~2#1.offset|) 1) |c_ULTIMATE.start_main_~n~0#1|)) is different from false [2022-12-14 07:16:52,640 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:16:52,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2022-12-14 07:16:52,647 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:16:52,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 37 [2022-12-14 07:16:52,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-14 07:16:52,744 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:16:52,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25914929] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:16:52,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [86878688] [2022-12-14 07:16:52,745 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2022-12-14 07:16:52,746 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:16:52,746 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:16:52,746 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:16:52,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:16:52,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:52,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:52,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:52,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 07:16:52,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:52,804 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 22 [2022-12-14 07:16:52,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:52,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:52,839 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:52,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:52,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:52,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:52,878 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:52,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:52,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:52,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:52,948 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:52,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:52,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:52,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,016 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:53,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:53,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,123 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:53,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:53,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,187 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:53,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:53,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:53,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-12-14 07:16:53,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:53,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 63 [2022-12-14 07:16:53,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:53,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-12-14 07:16:53,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:53,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 62 [2022-12-14 07:16:53,594 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-12-14 07:16:53,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 57 [2022-12-14 07:16:53,729 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-12-14 07:16:53,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:53,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:53,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:53,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:53,917 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:53,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:16:54,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,096 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:54,097 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:54,100 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:54,138 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:54,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:16:54,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:54,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:54,545 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:54,590 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:54,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:16:54,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:54,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:54,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:54,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:16:55,007 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:55,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:16:55,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:55,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:55,086 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:55,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:55,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:55,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:55,127 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:55,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:55,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:55,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:16:55,167 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:16:55,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:16:55,182 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 20 for LOIs [2022-12-14 07:16:55,189 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-12-14 07:16:55,197 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:17:11,059 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9012#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:17:11,060 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:17:11,060 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:17:11,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 30 [2022-12-14 07:17:11,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091823259] [2022-12-14 07:17:11,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:17:11,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-14 07:17:11,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:17:11,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-14 07:17:11,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=2384, Unknown=1, NotChecked=102, Total=2862 [2022-12-14 07:17:11,062 INFO L87 Difference]: Start difference. First operand 138 states and 168 transitions. Second operand has 30 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 28 states have internal predecessors, (49), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-14 07:17:12,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:17:12,440 INFO L93 Difference]: Finished difference Result 184 states and 215 transitions. [2022-12-14 07:17:12,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 07:17:12,441 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 28 states have internal predecessors, (49), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 37 [2022-12-14 07:17:12,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:17:12,442 INFO L225 Difference]: With dead ends: 184 [2022-12-14 07:17:12,442 INFO L226 Difference]: Without dead ends: 184 [2022-12-14 07:17:12,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 68 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1763 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=849, Invalid=4556, Unknown=1, NotChecked=144, Total=5550 [2022-12-14 07:17:12,445 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 918 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 07:17:12,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 661 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 944 Invalid, 0 Unknown, 135 Unchecked, 0.5s Time] [2022-12-14 07:17:12,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-12-14 07:17:12,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 143. [2022-12-14 07:17:12,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 102 states have (on average 1.392156862745098) internal successors, (142), 123 states have internal predecessors, (142), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-14 07:17:12,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 173 transitions. [2022-12-14 07:17:12,452 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 173 transitions. Word has length 37 [2022-12-14 07:17:12,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:17:12,452 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 173 transitions. [2022-12-14 07:17:12,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 28 states have internal predecessors, (49), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-14 07:17:12,452 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 173 transitions. [2022-12-14 07:17:12,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-14 07:17:12,453 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:17:12,453 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:17:12,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 07:17:12,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:17:12,654 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:17:12,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:17:12,655 INFO L85 PathProgramCache]: Analyzing trace with hash -986850864, now seen corresponding path program 3 times [2022-12-14 07:17:12,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:17:12,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127297240] [2022-12-14 07:17:12,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:17:12,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:17:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:17:18,717 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 07:17:18,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:17:18,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127297240] [2022-12-14 07:17:18,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127297240] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:17:18,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507885629] [2022-12-14 07:17:18,718 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 07:17:18,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:17:18,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:17:18,718 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:17:18,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 07:17:18,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 07:17:18,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:17:18,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 60 conjunts are in the unsatisfiable core [2022-12-14 07:17:18,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:17:18,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-14 07:17:19,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2022-12-14 07:17:19,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-12-14 07:17:20,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 41 [2022-12-14 07:17:20,452 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 07:17:20,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:17:23,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507885629] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:17:23,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [68569248] [2022-12-14 07:17:23,316 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-12-14 07:17:23,317 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:17:23,317 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:17:23,317 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:17:23,317 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:17:23,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 07:17:23,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,373 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 22 [2022-12-14 07:17:23,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,404 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:23,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:17:23,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,440 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:23,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:17:23,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,506 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:23,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:17:23,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,560 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:23,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:17:23,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,649 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:23,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:17:23,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,711 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:23,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:17:23,787 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:23,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-12-14 07:17:23,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:23,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 63 [2022-12-14 07:17:23,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:23,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:23,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-12-14 07:17:25,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:25,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:25,343 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:25,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:17:25,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:25,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:25,391 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:25,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:17:25,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:25,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:25,442 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:25,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:17:25,458 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 10 for LOIs [2022-12-14 07:17:25,460 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-12-14 07:17:25,470 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:17:35,137 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9649#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:17:35,137 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:17:35,137 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 07:17:35,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 30 [2022-12-14 07:17:35,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306304787] [2022-12-14 07:17:35,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 07:17:35,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-14 07:17:35,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:17:35,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-14 07:17:35,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=3100, Unknown=1, NotChecked=0, Total=3422 [2022-12-14 07:17:35,139 INFO L87 Difference]: Start difference. First operand 143 states and 173 transitions. Second operand has 30 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 30 states have internal predecessors, (47), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-14 07:17:38,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:17:38,732 INFO L93 Difference]: Finished difference Result 125 states and 143 transitions. [2022-12-14 07:17:38,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 07:17:38,733 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 30 states have internal predecessors, (47), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 41 [2022-12-14 07:17:38,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:17:38,733 INFO L225 Difference]: With dead ends: 125 [2022-12-14 07:17:38,733 INFO L226 Difference]: Without dead ends: 125 [2022-12-14 07:17:38,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 63 SyntacticMatches, 7 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1319 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=409, Invalid=3750, Unknown=1, NotChecked=0, Total=4160 [2022-12-14 07:17:38,734 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 25 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 07:17:38,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 714 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 07:17:38,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-12-14 07:17:38,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 113. [2022-12-14 07:17:38,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 73 states have (on average 1.36986301369863) internal successors, (100), 94 states have internal predecessors, (100), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:17:38,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2022-12-14 07:17:38,737 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 41 [2022-12-14 07:17:38,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:17:38,737 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2022-12-14 07:17:38,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 30 states have internal predecessors, (47), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-14 07:17:38,737 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2022-12-14 07:17:38,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-14 07:17:38,737 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:17:38,737 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:17:38,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 07:17:38,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-14 07:17:38,938 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:17:38,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:17:38,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2016286436, now seen corresponding path program 1 times [2022-12-14 07:17:38,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:17:38,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052628835] [2022-12-14 07:17:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:17:38,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:17:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:17:38,972 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 07:17:38,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:17:38,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052628835] [2022-12-14 07:17:38,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052628835] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:17:38,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:17:38,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:17:38,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326224150] [2022-12-14 07:17:38,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:17:38,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:17:38,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:17:38,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:17:38,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:17:38,973 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 07:17:39,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:17:39,017 INFO L93 Difference]: Finished difference Result 109 states and 125 transitions. [2022-12-14 07:17:39,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:17:39,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2022-12-14 07:17:39,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:17:39,018 INFO L225 Difference]: With dead ends: 109 [2022-12-14 07:17:39,018 INFO L226 Difference]: Without dead ends: 109 [2022-12-14 07:17:39,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:17:39,019 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 78 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:17:39,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 81 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:17:39,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-12-14 07:17:39,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-12-14 07:17:39,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 73 states have (on average 1.3150684931506849) internal successors, (96), 90 states have internal predecessors, (96), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:17:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2022-12-14 07:17:39,021 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 41 [2022-12-14 07:17:39,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:17:39,021 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2022-12-14 07:17:39,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 07:17:39,021 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2022-12-14 07:17:39,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-14 07:17:39,021 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:17:39,021 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:17:39,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-14 07:17:39,022 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:17:39,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:17:39,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2016286435, now seen corresponding path program 1 times [2022-12-14 07:17:39,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:17:39,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456343312] [2022-12-14 07:17:39,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:17:39,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:17:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:17:39,129 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 07:17:39,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:17:39,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456343312] [2022-12-14 07:17:39,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456343312] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:17:39,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:17:39,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:17:39,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314472074] [2022-12-14 07:17:39,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:17:39,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:17:39,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:17:39,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:17:39,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:17:39,132 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 07:17:39,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:17:39,202 INFO L93 Difference]: Finished difference Result 105 states and 121 transitions. [2022-12-14 07:17:39,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:17:39,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2022-12-14 07:17:39,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:17:39,203 INFO L225 Difference]: With dead ends: 105 [2022-12-14 07:17:39,203 INFO L226 Difference]: Without dead ends: 105 [2022-12-14 07:17:39,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:17:39,203 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 70 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:17:39,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 74 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:17:39,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-12-14 07:17:39,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-12-14 07:17:39,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 73 states have (on average 1.2602739726027397) internal successors, (92), 86 states have internal predecessors, (92), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:17:39,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2022-12-14 07:17:39,206 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 41 [2022-12-14 07:17:39,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:17:39,206 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2022-12-14 07:17:39,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 07:17:39,206 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2022-12-14 07:17:39,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-14 07:17:39,207 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:17:39,207 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:17:39,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-14 07:17:39,207 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:17:39,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:17:39,207 INFO L85 PathProgramCache]: Analyzing trace with hash 12704851, now seen corresponding path program 1 times [2022-12-14 07:17:39,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:17:39,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713751326] [2022-12-14 07:17:39,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:17:39,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:17:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:17:39,324 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:17:39,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:17:39,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713751326] [2022-12-14 07:17:39,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713751326] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:17:39,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:17:39,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:17:39,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868603691] [2022-12-14 07:17:39,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:17:39,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:17:39,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:17:39,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:17:39,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:17:39,326 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 07:17:39,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:17:39,450 INFO L93 Difference]: Finished difference Result 107 states and 120 transitions. [2022-12-14 07:17:39,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 07:17:39,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 45 [2022-12-14 07:17:39,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:17:39,451 INFO L225 Difference]: With dead ends: 107 [2022-12-14 07:17:39,451 INFO L226 Difference]: Without dead ends: 107 [2022-12-14 07:17:39,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-14 07:17:39,451 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 77 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:17:39,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 228 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:17:39,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-12-14 07:17:39,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2022-12-14 07:17:39,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 73 states have (on average 1.2465753424657535) internal successors, (91), 86 states have internal predecessors, (91), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:17:39,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2022-12-14 07:17:39,453 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 45 [2022-12-14 07:17:39,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:17:39,454 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2022-12-14 07:17:39,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 07:17:39,454 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2022-12-14 07:17:39,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-14 07:17:39,454 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:17:39,454 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:17:39,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-14 07:17:39,454 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:17:39,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:17:39,454 INFO L85 PathProgramCache]: Analyzing trace with hash 231963315, now seen corresponding path program 1 times [2022-12-14 07:17:39,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:17:39,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405324236] [2022-12-14 07:17:39,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:17:39,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:17:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:17:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:17:39,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:17:39,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405324236] [2022-12-14 07:17:39,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405324236] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:17:39,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:17:39,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 07:17:39,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920343046] [2022-12-14 07:17:39,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:17:39,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:17:39,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:17:39,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:17:39,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:17:39,594 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 07:17:39,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:17:39,749 INFO L93 Difference]: Finished difference Result 111 states and 126 transitions. [2022-12-14 07:17:39,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 07:17:39,749 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2022-12-14 07:17:39,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:17:39,750 INFO L225 Difference]: With dead ends: 111 [2022-12-14 07:17:39,750 INFO L226 Difference]: Without dead ends: 111 [2022-12-14 07:17:39,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-14 07:17:39,751 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 104 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:17:39,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 211 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:17:39,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-12-14 07:17:39,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2022-12-14 07:17:39,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 76 states have (on average 1.236842105263158) internal successors, (94), 90 states have internal predecessors, (94), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-14 07:17:39,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2022-12-14 07:17:39,755 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 46 [2022-12-14 07:17:39,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:17:39,755 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2022-12-14 07:17:39,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 07:17:39,755 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2022-12-14 07:17:39,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-14 07:17:39,756 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:17:39,756 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:17:39,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-14 07:17:39,756 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:17:39,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:17:39,756 INFO L85 PathProgramCache]: Analyzing trace with hash 778226521, now seen corresponding path program 1 times [2022-12-14 07:17:39,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:17:39,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97452873] [2022-12-14 07:17:39,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:17:39,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:17:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:17:39,954 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 07:17:39,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:17:39,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97452873] [2022-12-14 07:17:39,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97452873] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:17:39,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589426309] [2022-12-14 07:17:39,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:17:39,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:17:39,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:17:39,955 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:17:39,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 07:17:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:17:40,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 07:17:40,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:17:40,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-14 07:17:40,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-12-14 07:17:40,196 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 16 [2022-12-14 07:17:40,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 07:17:40,256 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 07:17:40,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:17:40,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589426309] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:17:40,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 07:17:40,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 16 [2022-12-14 07:17:40,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576359582] [2022-12-14 07:17:40,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:17:40,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:17:40,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:17:40,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:17:40,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-12-14 07:17:40,257 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 07:17:43,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 07:17:45,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 07:17:47,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 07:17:49,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 07:17:49,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:17:49,417 INFO L93 Difference]: Finished difference Result 129 states and 136 transitions. [2022-12-14 07:17:49,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 07:17:49,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2022-12-14 07:17:49,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:17:49,418 INFO L225 Difference]: With dead ends: 129 [2022-12-14 07:17:49,418 INFO L226 Difference]: Without dead ends: 129 [2022-12-14 07:17:49,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-12-14 07:17:49,419 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 102 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 22 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:17:49,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 288 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 189 Invalid, 5 Unknown, 0 Unchecked, 9.1s Time] [2022-12-14 07:17:49,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-12-14 07:17:49,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2022-12-14 07:17:49,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 88 states have (on average 1.2045454545454546) internal successors, (106), 101 states have internal predecessors, (106), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:17:49,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 135 transitions. [2022-12-14 07:17:49,421 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 135 transitions. Word has length 46 [2022-12-14 07:17:49,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:17:49,421 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 135 transitions. [2022-12-14 07:17:49,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 07:17:49,422 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 135 transitions. [2022-12-14 07:17:49,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 07:17:49,422 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:17:49,422 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 07:17:49,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-14 07:17:49,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-14 07:17:49,624 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:17:49,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:17:49,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1326522291, now seen corresponding path program 1 times [2022-12-14 07:17:49,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:17:49,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620378764] [2022-12-14 07:17:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:17:49,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:17:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:17:49,669 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 07:17:49,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:17:49,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620378764] [2022-12-14 07:17:49,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620378764] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:17:49,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:17:49,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:17:49,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325312728] [2022-12-14 07:17:49,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:17:49,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:17:49,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:17:49,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:17:49,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:17:49,670 INFO L87 Difference]: Start difference. First operand 125 states and 135 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 07:17:49,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:17:49,709 INFO L93 Difference]: Finished difference Result 121 states and 131 transitions. [2022-12-14 07:17:49,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:17:49,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 50 [2022-12-14 07:17:49,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:17:49,710 INFO L225 Difference]: With dead ends: 121 [2022-12-14 07:17:49,710 INFO L226 Difference]: Without dead ends: 121 [2022-12-14 07:17:49,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:17:49,711 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 56 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:17:49,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 76 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:17:49,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-12-14 07:17:49,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-12-14 07:17:49,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 88 states have (on average 1.1590909090909092) internal successors, (102), 97 states have internal predecessors, (102), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:17:49,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2022-12-14 07:17:49,713 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 50 [2022-12-14 07:17:49,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:17:49,714 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2022-12-14 07:17:49,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 07:17:49,714 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2022-12-14 07:17:49,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 07:17:49,714 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:17:49,714 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 07:17:49,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-14 07:17:49,715 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:17:49,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:17:49,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1326522290, now seen corresponding path program 1 times [2022-12-14 07:17:49,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:17:49,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265901536] [2022-12-14 07:17:49,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:17:49,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:17:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:17:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 07:17:49,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:17:49,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265901536] [2022-12-14 07:17:49,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265901536] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:17:49,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:17:49,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:17:49,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159607216] [2022-12-14 07:17:49,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:17:49,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:17:49,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:17:49,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:17:49,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:17:49,799 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 07:17:49,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:17:49,841 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2022-12-14 07:17:49,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:17:49,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 50 [2022-12-14 07:17:49,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:17:49,842 INFO L225 Difference]: With dead ends: 117 [2022-12-14 07:17:49,842 INFO L226 Difference]: Without dead ends: 117 [2022-12-14 07:17:49,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:17:49,843 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 23 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:17:49,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 69 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:17:49,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-12-14 07:17:49,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-12-14 07:17:49,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 88 states have (on average 1.1136363636363635) internal successors, (98), 93 states have internal predecessors, (98), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 07:17:49,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 127 transitions. [2022-12-14 07:17:49,845 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 127 transitions. Word has length 50 [2022-12-14 07:17:49,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:17:49,845 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 127 transitions. [2022-12-14 07:17:49,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 07:17:49,846 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 127 transitions. [2022-12-14 07:17:49,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 07:17:49,846 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:17:49,846 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:17:49,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-14 07:17:49,846 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:17:49,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:17:49,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1761697376, now seen corresponding path program 1 times [2022-12-14 07:17:49,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:17:49,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120451316] [2022-12-14 07:17:49,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:17:49,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:17:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:17:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 07:17:50,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:17:50,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120451316] [2022-12-14 07:17:50,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120451316] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:17:50,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753716826] [2022-12-14 07:17:50,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:17:50,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:17:50,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:17:50,142 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:17:50,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 07:17:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:17:50,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 61 conjunts are in the unsatisfiable core [2022-12-14 07:17:50,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:17:50,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-14 07:17:50,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-12-14 07:17:50,380 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 18 [2022-12-14 07:17:50,699 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 07:17:50,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 17 [2022-12-14 07:17:50,748 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 07:17:50,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:17:50,866 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:17:50,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 706 treesize of output 654 [2022-12-14 07:17:51,483 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 07:17:51,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753716826] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:17:51,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1523603426] [2022-12-14 07:17:51,484 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2022-12-14 07:17:51,484 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:17:51,484 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:17:51,484 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:17:51,484 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:17:51,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:51,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:51,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:51,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 07:17:51,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:51,534 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 22 [2022-12-14 07:17:51,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:51,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:51,573 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:51,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:17:51,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:51,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:51,620 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:51,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:17:51,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:51,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:51,720 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:51,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:17:51,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:51,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:51,783 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:51,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:17:51,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:51,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:51,876 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:51,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:17:51,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:51,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:51,937 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:51,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:17:52,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:52,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-12-14 07:17:52,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:52,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 63 [2022-12-14 07:17:52,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:52,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-12-14 07:17:52,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:52,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 62 [2022-12-14 07:17:52,381 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-12-14 07:17:52,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 72 [2022-12-14 07:17:52,522 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-12-14 07:17:52,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:52,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:52,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:52,747 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:52,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:17:52,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:52,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:52,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:52,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:52,985 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:52,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:17:53,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:53,419 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:53,422 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:53,470 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:53,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:17:53,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:53,916 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:53,917 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:53,919 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:53,958 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:53,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:17:55,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:55,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:55,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:55,299 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:55,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:17:55,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:55,545 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:55,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:55,550 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:55,597 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:55,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:17:56,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:56,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:56,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:56,821 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:56,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:17:56,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:56,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:56,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:56,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:57,047 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:57,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:17:57,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:57,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:57,507 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:57,544 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:57,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:17:57,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:57,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:57,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:17:57,752 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:57,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:17:57,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,828 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:57,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:17:57,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,875 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:57,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:17:57,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:17:57,931 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:17:57,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:17:57,945 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 18 for LOIs [2022-12-14 07:17:57,951 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-12-14 07:17:57,960 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:18:32,490 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12065#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:18:32,490 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:18:32,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:18:32,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 32 [2022-12-14 07:18:32,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098523736] [2022-12-14 07:18:32,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:18:32,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 07:18:32,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:18:32,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 07:18:32,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=2961, Unknown=0, NotChecked=0, Total=3422 [2022-12-14 07:18:32,492 INFO L87 Difference]: Start difference. First operand 117 states and 127 transitions. Second operand has 32 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 31 states have internal predecessors, (71), 8 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 07:18:33,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:18:33,799 INFO L93 Difference]: Finished difference Result 202 states and 212 transitions. [2022-12-14 07:18:33,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-14 07:18:33,800 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 31 states have internal predecessors, (71), 8 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 6 states have call successors, (11) Word has length 54 [2022-12-14 07:18:33,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:18:33,800 INFO L225 Difference]: With dead ends: 202 [2022-12-14 07:18:33,800 INFO L226 Difference]: Without dead ends: 200 [2022-12-14 07:18:33,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 103 SyntacticMatches, 15 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2440 ImplicationChecksByTransitivity, 35.9s TimeCoverageRelationStatistics Valid=859, Invalid=5303, Unknown=0, NotChecked=0, Total=6162 [2022-12-14 07:18:33,802 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 572 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 07:18:33,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 430 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 07:18:33,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-12-14 07:18:33,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 186. [2022-12-14 07:18:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 142 states have (on average 1.091549295774648) internal successors, (155), 148 states have internal predecessors, (155), 24 states have call successors, (24), 17 states have call predecessors, (24), 16 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-14 07:18:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 201 transitions. [2022-12-14 07:18:33,807 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 201 transitions. Word has length 54 [2022-12-14 07:18:33,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:18:33,807 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 201 transitions. [2022-12-14 07:18:33,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 31 states have internal predecessors, (71), 8 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 07:18:33,808 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 201 transitions. [2022-12-14 07:18:33,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 07:18:33,808 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:18:33,808 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:18:33,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 07:18:34,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:18:34,010 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:18:34,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:18:34,011 INFO L85 PathProgramCache]: Analyzing trace with hash 160485480, now seen corresponding path program 1 times [2022-12-14 07:18:34,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:18:34,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333485249] [2022-12-14 07:18:34,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:18:34,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:18:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:18:34,163 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 07:18:34,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:18:34,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333485249] [2022-12-14 07:18:34,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333485249] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:18:34,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188080508] [2022-12-14 07:18:34,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:18:34,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:18:34,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:18:34,164 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:18:34,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 07:18:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:18:34,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-14 07:18:34,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:18:34,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:18:34,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 07:18:34,405 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 07:18:34,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:18:34,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2022-12-14 07:18:34,535 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 07:18:34,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188080508] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:18:34,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1159214865] [2022-12-14 07:18:34,537 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-12-14 07:18:34,537 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:18:34,537 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:18:34,537 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:18:34,537 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:18:34,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:34,580 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 22 [2022-12-14 07:18:34,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:34,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:34,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:34,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 07:18:34,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:34,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:34,632 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:18:34,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:18:34,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:34,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:34,685 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:18:34,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:18:34,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:34,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:34,776 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:18:34,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:18:34,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:34,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:34,835 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:18:34,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:18:34,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:34,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:34,930 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:18:34,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:18:34,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:34,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:34,995 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:18:34,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:18:35,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:18:35,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:35,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-12-14 07:18:35,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:35,149 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 43 treesize of output 39 [2022-12-14 07:18:35,180 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:18:35,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:35,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:35,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:35,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:35,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:35,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:35,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:35,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:35,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:35,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:35,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:35,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:35,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 63 [2022-12-14 07:18:36,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:36,828 INFO L321 Elim1Store]: treesize reduction 37, result has 38.3 percent of original size [2022-12-14 07:18:36,828 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 45 [2022-12-14 07:18:36,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:18:36,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:36,924 INFO L321 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2022-12-14 07:18:36,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 87 [2022-12-14 07:18:38,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:38,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:38,476 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:18:38,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:18:38,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:38,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:38,524 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:18:38,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:18:38,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:38,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:18:38,575 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:18:38,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:18:38,595 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 20 for LOIs [2022-12-14 07:18:38,603 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-12-14 07:18:38,616 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:18:52,312 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12861#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:18:52,312 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:18:52,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:18:52,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2022-12-14 07:18:52,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202105530] [2022-12-14 07:18:52,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:18:52,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 07:18:52,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:18:52,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 07:18:52,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1951, Unknown=1, NotChecked=0, Total=2162 [2022-12-14 07:18:52,313 INFO L87 Difference]: Start difference. First operand 186 states and 201 transitions. Second operand has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-12-14 07:18:53,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 07:18:55,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 07:18:57,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 07:18:59,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 07:19:01,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 07:19:03,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 07:19:03,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:19:03,837 INFO L93 Difference]: Finished difference Result 189 states and 199 transitions. [2022-12-14 07:19:03,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 07:19:03,837 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 55 [2022-12-14 07:19:03,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:19:03,838 INFO L225 Difference]: With dead ends: 189 [2022-12-14 07:19:03,838 INFO L226 Difference]: Without dead ends: 189 [2022-12-14 07:19:03,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=299, Invalid=2670, Unknown=1, NotChecked=0, Total=2970 [2022-12-14 07:19:03,839 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 184 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 38 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-12-14 07:19:03,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 443 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 319 Invalid, 6 Unknown, 0 Unchecked, 11.4s Time] [2022-12-14 07:19:03,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-12-14 07:19:03,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 185. [2022-12-14 07:19:03,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 142 states have (on average 1.0845070422535212) internal successors, (154), 147 states have internal predecessors, (154), 23 states have call successors, (23), 17 states have call predecessors, (23), 16 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-12-14 07:19:03,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 198 transitions. [2022-12-14 07:19:03,843 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 198 transitions. Word has length 55 [2022-12-14 07:19:03,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:19:03,843 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 198 transitions. [2022-12-14 07:19:03,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-12-14 07:19:03,843 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 198 transitions. [2022-12-14 07:19:03,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 07:19:03,844 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:19:03,844 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:19:03,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-12-14 07:19:04,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-14 07:19:04,046 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:19:04,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:19:04,047 INFO L85 PathProgramCache]: Analyzing trace with hash -721790580, now seen corresponding path program 1 times [2022-12-14 07:19:04,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:19:04,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444074525] [2022-12-14 07:19:04,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:19:04,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:19:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:19:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 07:19:04,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:19:04,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444074525] [2022-12-14 07:19:04,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444074525] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:19:04,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343097259] [2022-12-14 07:19:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:19:04,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:19:04,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:19:04,459 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:19:04,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-14 07:19:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:19:04,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-14 07:19:04,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:19:04,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-14 07:19:04,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-12-14 07:19:04,794 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-12-14 07:19:05,551 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 07:19:05,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 26 [2022-12-14 07:19:05,582 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 07:19:05,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:19:05,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343097259] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:19:05,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 07:19:05,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 26 [2022-12-14 07:19:05,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462701052] [2022-12-14 07:19:05,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:19:05,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 07:19:05,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:19:05,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 07:19:05,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2022-12-14 07:19:05,584 INFO L87 Difference]: Start difference. First operand 185 states and 198 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-12-14 07:19:07,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 07:19:08,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:19:08,160 INFO L93 Difference]: Finished difference Result 184 states and 195 transitions. [2022-12-14 07:19:08,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 07:19:08,160 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 58 [2022-12-14 07:19:08,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:19:08,161 INFO L225 Difference]: With dead ends: 184 [2022-12-14 07:19:08,161 INFO L226 Difference]: Without dead ends: 184 [2022-12-14 07:19:08,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 07:19:08,161 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 144 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:19:08,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 121 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 128 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 07:19:08,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-12-14 07:19:08,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2022-12-14 07:19:08,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 142 states have (on average 1.0633802816901408) internal successors, (151), 146 states have internal predecessors, (151), 23 states have call successors, (23), 17 states have call predecessors, (23), 16 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-12-14 07:19:08,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 195 transitions. [2022-12-14 07:19:08,164 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 195 transitions. Word has length 58 [2022-12-14 07:19:08,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:19:08,164 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 195 transitions. [2022-12-14 07:19:08,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-12-14 07:19:08,165 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 195 transitions. [2022-12-14 07:19:08,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 07:19:08,165 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:19:08,165 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:19:08,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-14 07:19:08,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-12-14 07:19:08,368 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:19:08,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:19:08,369 INFO L85 PathProgramCache]: Analyzing trace with hash 2143956239, now seen corresponding path program 1 times [2022-12-14 07:19:08,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:19:08,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086593343] [2022-12-14 07:19:08,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:19:08,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:19:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:19:08,639 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 07:19:08,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:19:08,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086593343] [2022-12-14 07:19:08,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086593343] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:19:08,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:19:08,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 07:19:08,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236193407] [2022-12-14 07:19:08,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:19:08,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 07:19:08,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:19:08,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 07:19:08,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-14 07:19:08,641 INFO L87 Difference]: Start difference. First operand 184 states and 195 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 07:19:08,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:19:08,995 INFO L93 Difference]: Finished difference Result 184 states and 193 transitions. [2022-12-14 07:19:08,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 07:19:08,996 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 60 [2022-12-14 07:19:08,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:19:08,996 INFO L225 Difference]: With dead ends: 184 [2022-12-14 07:19:08,996 INFO L226 Difference]: Without dead ends: 184 [2022-12-14 07:19:08,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-12-14 07:19:08,997 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 120 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:19:08,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 174 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:19:08,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-12-14 07:19:08,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2022-12-14 07:19:08,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 142 states have (on average 1.0492957746478873) internal successors, (149), 146 states have internal predecessors, (149), 23 states have call successors, (23), 17 states have call predecessors, (23), 16 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-12-14 07:19:08,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 193 transitions. [2022-12-14 07:19:09,000 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 193 transitions. Word has length 60 [2022-12-14 07:19:09,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:19:09,000 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 193 transitions. [2022-12-14 07:19:09,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 07:19:09,000 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 193 transitions. [2022-12-14 07:19:09,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 07:19:09,000 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:19:09,000 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:19:09,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-14 07:19:09,000 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:19:09,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:19:09,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1395584350, now seen corresponding path program 1 times [2022-12-14 07:19:09,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:19:09,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13794361] [2022-12-14 07:19:09,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:19:09,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:19:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:19:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 07:19:09,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:19:09,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13794361] [2022-12-14 07:19:09,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13794361] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:19:09,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103554458] [2022-12-14 07:19:09,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:19:09,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:19:09,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:19:09,355 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:19:09,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-14 07:19:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:19:09,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 61 conjunts are in the unsatisfiable core [2022-12-14 07:19:09,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:19:09,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-14 07:19:09,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-12-14 07:19:09,777 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 20 [2022-12-14 07:19:10,160 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 07:19:10,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2022-12-14 07:19:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 07:19:10,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:19:10,346 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:19:10,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 706 treesize of output 654 [2022-12-14 07:19:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 07:19:11,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103554458] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:19:11,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2010065156] [2022-12-14 07:19:11,127 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2022-12-14 07:19:11,127 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:19:11,127 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:19:11,127 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:19:11,127 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:19:11,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,172 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 22 [2022-12-14 07:19:11,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 07:19:11,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,222 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:11,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:19:11,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,267 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:11,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:19:11,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,345 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:11,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:19:11,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,402 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:11,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:19:11,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,500 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:11,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:19:11,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,563 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:11,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:19:11,652 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:11,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-12-14 07:19:11,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,710 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 43 treesize of output 39 [2022-12-14 07:19:11,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:11,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:11,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 63 [2022-12-14 07:19:12,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:12,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:12,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:12,400 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-14 07:19:12,400 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 31 treesize of output 37 [2022-12-14 07:19:12,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:12,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:12,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:12,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:12,488 INFO L321 Elim1Store]: treesize reduction 28, result has 55.6 percent of original size [2022-12-14 07:19:12,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 63 [2022-12-14 07:19:14,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:14,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:14,074 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:14,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:19:14,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:14,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:14,122 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:14,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:19:14,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:14,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:14,166 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:14,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:19:14,179 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 18 for LOIs [2022-12-14 07:19:14,189 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-12-14 07:19:14,199 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:19:34,378 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14653#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:19:34,378 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:19:34,378 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:19:34,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 38 [2022-12-14 07:19:34,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054100935] [2022-12-14 07:19:34,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:19:34,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 07:19:34,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:19:34,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 07:19:34,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=4909, Unknown=0, NotChecked=0, Total=5256 [2022-12-14 07:19:34,380 INFO L87 Difference]: Start difference. First operand 184 states and 193 transitions. Second operand has 38 states, 33 states have (on average 2.878787878787879) internal successors, (95), 37 states have internal predecessors, (95), 8 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 07:19:36,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:19:36,863 INFO L93 Difference]: Finished difference Result 243 states and 252 transitions. [2022-12-14 07:19:36,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-14 07:19:36,863 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 33 states have (on average 2.878787878787879) internal successors, (95), 37 states have internal predecessors, (95), 8 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 6 states have call successors, (11) Word has length 62 [2022-12-14 07:19:36,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:19:36,864 INFO L225 Difference]: With dead ends: 243 [2022-12-14 07:19:36,864 INFO L226 Difference]: Without dead ends: 239 [2022-12-14 07:19:36,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 123 SyntacticMatches, 7 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3622 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=928, Invalid=9172, Unknown=0, NotChecked=0, Total=10100 [2022-12-14 07:19:36,865 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 591 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 07:19:36,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 694 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 07:19:36,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-12-14 07:19:36,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 121. [2022-12-14 07:19:36,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 93 states have (on average 1.053763440860215) internal successors, (98), 95 states have internal predecessors, (98), 14 states have call successors, (14), 12 states have call predecessors, (14), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 07:19:36,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions. [2022-12-14 07:19:36,867 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 62 [2022-12-14 07:19:36,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:19:36,868 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 125 transitions. [2022-12-14 07:19:36,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 33 states have (on average 2.878787878787879) internal successors, (95), 37 states have internal predecessors, (95), 8 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 07:19:36,868 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 125 transitions. [2022-12-14 07:19:36,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 07:19:36,868 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:19:36,868 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:19:36,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-14 07:19:37,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:19:37,069 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:19:37,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:19:37,069 INFO L85 PathProgramCache]: Analyzing trace with hash 99582740, now seen corresponding path program 1 times [2022-12-14 07:19:37,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:19:37,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581833394] [2022-12-14 07:19:37,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:19:37,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:19:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:19:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 07:19:37,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:19:37,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581833394] [2022-12-14 07:19:37,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581833394] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:19:37,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001771178] [2022-12-14 07:19:37,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:19:37,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:19:37,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:19:37,891 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:19:37,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 07:19:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:19:37,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 114 conjunts are in the unsatisfiable core [2022-12-14 07:19:38,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:19:38,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-14 07:19:38,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2022-12-14 07:19:38,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2022-12-14 07:19:38,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-14 07:19:39,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:39,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2022-12-14 07:19:39,275 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-12-14 07:19:39,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:39,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:39,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 51 [2022-12-14 07:19:39,408 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-12-14 07:19:42,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:42,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:42,681 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 07:19:42,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 47 [2022-12-14 07:19:42,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2022-12-14 07:19:42,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2022-12-14 07:19:42,848 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-14 07:19:42,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:19:43,933 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:43,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 07:19:48,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001771178] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:19:48,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [881206381] [2022-12-14 07:19:48,795 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2022-12-14 07:19:48,795 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:19:48,795 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:19:48,796 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:19:48,796 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:19:48,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:48,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:48,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:48,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 07:19:48,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:48,868 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 22 [2022-12-14 07:19:48,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:48,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:48,912 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:48,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:19:48,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:48,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:48,962 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:48,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:19:49,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,043 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:49,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:19:49,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,108 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:49,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:19:49,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,205 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:49,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:19:49,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,270 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:49,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:19:49,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:49,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-12-14 07:19:49,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:49,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-12-14 07:19:49,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:49,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 63 [2022-12-14 07:19:49,684 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:49,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 62 [2022-12-14 07:19:49,718 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-12-14 07:19:49,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 57 [2022-12-14 07:19:49,850 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-12-14 07:19:49,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:49,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,025 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:50,025 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:50,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:50,076 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:50,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:19:50,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:50,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:50,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:50,312 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:50,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:19:50,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:50,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:50,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:50,766 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:50,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:19:50,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:50,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:50,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:50,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:51,006 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:51,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:19:52,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:52,050 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:52,054 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:52,092 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:52,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:19:52,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:52,531 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:52,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:52,541 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:52,582 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:52,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:19:53,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:53,626 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:53,626 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:53,674 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:53,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:19:53,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:53,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:53,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:53,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:53,960 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:53,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:19:54,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:54,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:54,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:54,583 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:54,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:19:54,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:54,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:54,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:54,761 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:54,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:19:54,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:54,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:54,928 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:54,933 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:54,978 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:54,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:19:55,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:55,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:55,329 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:55,373 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:55,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:19:55,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,667 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:55,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:55,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:19:55,711 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:55,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2022-12-14 07:19:55,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,780 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:55,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:19:55,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,830 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:55,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:19:55,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:19:55,879 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:19:55,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:19:55,898 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 163 for LOIs [2022-12-14 07:19:56,105 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-12-14 07:19:56,113 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:20:52,486 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15507#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:20:52,486 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:20:52,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 07:20:52,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25] total 42 [2022-12-14 07:20:52,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011502507] [2022-12-14 07:20:52,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 07:20:52,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-12-14 07:20:52,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:20:52,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-12-14 07:20:52,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=962, Invalid=6518, Unknown=2, NotChecked=0, Total=7482 [2022-12-14 07:20:52,487 INFO L87 Difference]: Start difference. First operand 121 states and 125 transitions. Second operand has 42 states, 37 states have (on average 2.027027027027027) internal successors, (75), 40 states have internal predecessors, (75), 8 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-12-14 07:21:02,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:21:02,489 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2022-12-14 07:21:02,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-14 07:21:02,490 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 37 states have (on average 2.027027027027027) internal successors, (75), 40 states have internal predecessors, (75), 8 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 64 [2022-12-14 07:21:02,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:21:02,490 INFO L225 Difference]: With dead ends: 162 [2022-12-14 07:21:02,490 INFO L226 Difference]: Without dead ends: 80 [2022-12-14 07:21:02,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 89 SyntacticMatches, 26 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5455 ImplicationChecksByTransitivity, 73.1s TimeCoverageRelationStatistics Valid=1767, Invalid=11113, Unknown=2, NotChecked=0, Total=12882 [2022-12-14 07:21:02,492 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 330 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:21:02,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 347 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-14 07:21:02,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-12-14 07:21:02,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-12-14 07:21:02,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 63 states have internal predecessors, (64), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 07:21:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2022-12-14 07:21:02,493 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 64 [2022-12-14 07:21:02,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:21:02,493 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2022-12-14 07:21:02,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 37 states have (on average 2.027027027027027) internal successors, (75), 40 states have internal predecessors, (75), 8 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-12-14 07:21:02,494 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2022-12-14 07:21:02,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-14 07:21:02,494 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:21:02,494 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:21:02,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-14 07:21:02,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-12-14 07:21:02,695 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:21:02,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:21:02,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1985221542, now seen corresponding path program 1 times [2022-12-14 07:21:02,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:21:02,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463797594] [2022-12-14 07:21:02,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:21:02,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:21:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:21:03,133 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 07:21:03,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:21:03,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463797594] [2022-12-14 07:21:03,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463797594] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:21:03,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886677592] [2022-12-14 07:21:03,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:21:03,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:21:03,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:21:03,134 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:21:03,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-14 07:21:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:21:03,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-14 07:21:03,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:21:03,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 07:21:04,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-12-14 07:21:04,038 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 07:21:04,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:21:04,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-12-14 07:21:04,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:04,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:04,283 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:21:04,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 41 [2022-12-14 07:21:04,478 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 07:21:04,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886677592] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:21:04,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [821189621] [2022-12-14 07:21:04,480 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2022-12-14 07:21:04,480 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:21:04,480 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:21:04,480 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:21:04,480 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:21:04,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:04,522 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 22 [2022-12-14 07:21:04,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:04,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:04,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:04,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 07:21:04,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:04,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:04,576 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:21:04,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:21:04,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:04,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:04,621 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:21:04,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:21:04,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:04,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:04,698 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:21:04,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:21:04,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:04,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:04,758 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:21:04,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:21:04,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:04,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:04,858 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:21:04,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:21:04,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:04,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:04,919 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:21:04,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:21:05,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:21:05,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:05,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-12-14 07:21:05,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:21:05,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:05,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:05,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:05,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:05,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:05,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:05,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:05,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:05,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:05,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:05,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:05,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:05,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 63 [2022-12-14 07:21:05,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:05,102 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 43 treesize of output 39 [2022-12-14 07:21:06,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:06,619 INFO L321 Elim1Store]: treesize reduction 37, result has 38.3 percent of original size [2022-12-14 07:21:06,619 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 45 [2022-12-14 07:21:06,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:21:06,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:06,746 INFO L321 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2022-12-14 07:21:06,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 87 [2022-12-14 07:21:09,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:09,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:09,977 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:21:09,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:21:10,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:10,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:10,029 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:21:10,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:21:10,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:10,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:10,080 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:21:10,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:21:10,098 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 18 for LOIs [2022-12-14 07:21:10,106 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-12-14 07:21:10,116 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:21:32,952 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16280#(and (<= |ULTIMATE.start_mkdup_~a#1.offset| 0) (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 0 |ULTIMATE.start_finddup_~_i#1.offset|) (<= (+ |ULTIMATE.start_main_~#i~2#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#i~2#1.base|)) (<= 0 |ULTIMATE.start_main_~#i~2#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#j~2#1.base|) 1) (= |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1| 4) (not (<= (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_#t~mem24#1| 4) 4) (select |#length| |ULTIMATE.start_main_~a~0#1.base|))) (<= |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934588) (<= |ULTIMATE.start_finddup_#in~_i#1.offset| 0) (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= 0 |ULTIMATE.start_finddup_#in~_i#1.offset|) (<= |ULTIMATE.start_mkdup_~j~0#1| 2147483647) (<= 0 |ULTIMATE.start_mkdup_~a#1.offset|) (<= |ULTIMATE.start_mkdup_~i~0#1| 2147483647) (<= |ULTIMATE.start_finddup_~a#1.offset| 0) (<= |ULTIMATE.start_mkdup_~n#1| 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_#t~mem23#1| 4))) |ULTIMATE.start_main_#t~mem25#1|) (<= |ULTIMATE.start_mkdup_#in~a#1.offset| 0) (<= 0 (+ |ULTIMATE.start_mkdup_~x~0#1| 2147483648)) (= |ULTIMATE.start_finddup_#res#1| 1) (<= |ULTIMATE.start_finddup_~_i#1.offset| 0) (<= 1 |ULTIMATE.start_finddup_#in~n#1|) (= |ULTIMATE.start_main_#t~mem24#1| (select (select |#memory_int| |ULTIMATE.start_main_~#j~2#1.base|) |ULTIMATE.start_main_~#j~2#1.offset|)) (<= |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483647) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#i~2#1.base|) |ULTIMATE.start_main_~#i~2#1.offset|)) (= (select |#valid| |ULTIMATE.start_main_~#i~2#1.base|) 1) (<= 0 |ULTIMATE.start_finddup_~a#1.offset|) (<= |ULTIMATE.start_main_~r~0#1| 1) (<= 1 |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1|) (<= 1 |ULTIMATE.start_finddup_~j~1#1|) (<= 0 |ULTIMATE.start_finddup_~i~1#1|) (<= 0 |ULTIMATE.start_finddup_#in~_j#1.offset|) (<= 0 (+ |ULTIMATE.start_mkdup_~j~0#1| 2147483648)) (<= 0 |ULTIMATE.start_finddup_#in~_i#1.base|) (<= |ULTIMATE.start_mkdup_#in~n#1| 2147483647) (<= 0 |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset|) (<= 4 |ULTIMATE.start_#Ultimate.meminit_#product#1|) (<= |ULTIMATE.start_mkdup_~x~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_~#j~2#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#j~2#1.base|)) (<= 1 |ULTIMATE.start_mkdup_~n#1|) (<= 0 |ULTIMATE.start_finddup_~_i#1.base|) (= |ULTIMATE.start_main_#t~malloc13#1.offset| 0) (<= |ULTIMATE.start_finddup_~n#1| 2147483647) (<= |ULTIMATE.start_finddup_#in~n#1| 2147483647) (<= 0 (select (select |#memory_int| |ULTIMATE.start_main_~#i~2#1.base|) |ULTIMATE.start_main_~#i~2#1.offset|)) (<= 1 |ULTIMATE.start_main_~r~0#1|) (< (select (select |#memory_int| |ULTIMATE.start_main_~#j~2#1.base|) |ULTIMATE.start_main_~#j~2#1.offset|) |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_finddup_#in~a#1.offset| 0) (= |ULTIMATE.start_main_~#j~2#1.offset| 0) (<= 0 |ULTIMATE.start_finddup_~_j#1.offset|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_mkdup_#in~a#1.offset|) (<= 0 |ULTIMATE.start_finddup_~_j#1.base|) (<= 0 |ULTIMATE.start_main_~#j~2#1.base|) (<= |ULTIMATE.start_finddup_~_j#1.offset| 0) (<= 0 (+ |ULTIMATE.start_mkdup_~i~0#1| 2147483648)) (<= 0 |ULTIMATE.start_finddup_#in~a#1.offset|) (<= 0 |ULTIMATE.start_finddup_#in~_j#1.base|) (<= (+ |ULTIMATE.start_main_~a~0#1.offset| 4 (* |ULTIMATE.start_main_#t~mem23#1| 4)) (select |#length| |ULTIMATE.start_main_~a~0#1.base|)) (<= 1 |ULTIMATE.start_finddup_~n#1|) (= (select |#valid| |ULTIMATE.start_main_~a~0#1.base|) 1) (<= 1 |ULTIMATE.start_mkdup_#in~n#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset| 0) (<= |ULTIMATE.start_finddup_#in~_j#1.offset| 0) (= |#NULL.base| 0) (= |ULTIMATE.start_main_~#i~2#1.offset| 0))' at error location [2022-12-14 07:21:32,952 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:21:32,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:21:32,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 30 [2022-12-14 07:21:32,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639066249] [2022-12-14 07:21:32,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:21:32,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-14 07:21:32,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:21:32,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-14 07:21:32,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=4503, Unknown=0, NotChecked=0, Total=4970 [2022-12-14 07:21:32,953 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand has 31 states, 30 states have (on average 3.966666666666667) internal successors, (119), 31 states have internal predecessors, (119), 7 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2022-12-14 07:21:33,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:21:33,908 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2022-12-14 07:21:33,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 07:21:33,908 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.966666666666667) internal successors, (119), 31 states have internal predecessors, (119), 7 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 70 [2022-12-14 07:21:33,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:21:33,908 INFO L225 Difference]: With dead ends: 81 [2022-12-14 07:21:33,908 INFO L226 Difference]: Without dead ends: 81 [2022-12-14 07:21:33,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 139 SyntacticMatches, 11 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2247 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=652, Invalid=5990, Unknown=0, NotChecked=0, Total=6642 [2022-12-14 07:21:33,910 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 254 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 07:21:33,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 264 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 07:21:33,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-12-14 07:21:33,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2022-12-14 07:21:33,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 62 states have internal predecessors, (63), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 07:21:33,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2022-12-14 07:21:33,912 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 70 [2022-12-14 07:21:33,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:21:33,912 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2022-12-14 07:21:33,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.966666666666667) internal successors, (119), 31 states have internal predecessors, (119), 7 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2022-12-14 07:21:33,912 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2022-12-14 07:21:33,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 07:21:33,913 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:21:33,913 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:21:33,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-14 07:21:34,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-12-14 07:21:34,115 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:21:34,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:21:34,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1090870049, now seen corresponding path program 1 times [2022-12-14 07:21:34,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:21:34,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680222366] [2022-12-14 07:21:34,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:21:34,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:21:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:21:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 07:21:46,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:21:46,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680222366] [2022-12-14 07:21:46,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680222366] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:21:46,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277406404] [2022-12-14 07:21:46,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:21:46,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:21:46,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:21:46,245 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:21:46,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-14 07:21:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:21:46,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 91 conjunts are in the unsatisfiable core [2022-12-14 07:21:46,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:21:46,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 07:21:46,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-14 07:21:47,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:47,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:47,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2022-12-14 07:21:48,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:48,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:48,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 39 [2022-12-14 07:21:50,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:50,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:21:50,568 INFO L321 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2022-12-14 07:21:50,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 36 [2022-12-14 07:21:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-14 07:21:50,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:21:53,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:21:53,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:21:53,296 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:21:53,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 6236 treesize of output 5752 [2022-12-14 07:21:53,342 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:21:53,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9264 treesize of output 7880 [2022-12-14 07:21:53,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-14 07:21:54,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 5334 treesize of output 4822 [2022-12-14 07:22:00,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 4881 treesize of output 4353 [2022-12-14 07:24:20,440 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:24:20,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 307 treesize of output 251 [2022-12-14 07:24:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-14 07:24:20,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277406404] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:24:20,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [116222050] [2022-12-14 07:24:20,757 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2022-12-14 07:24:20,757 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:24:20,757 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:24:20,757 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:24:20,758 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:24:20,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:20,802 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 22 [2022-12-14 07:24:20,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:20,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:20,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:20,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 07:24:20,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:20,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:20,858 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:24:20,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:24:20,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:20,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:20,915 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:24:20,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:24:20,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:20,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:20,994 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:24:20,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:24:21,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:21,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:21,058 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:24:21,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:24:21,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:21,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:21,151 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:24:21,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:24:21,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:21,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:21,211 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:24:21,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:24:21,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:24:21,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:21,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-12-14 07:24:21,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:21,357 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 43 treesize of output 39 [2022-12-14 07:24:21,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:24:21,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:21,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:21,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:21,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:21,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:21,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:21,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:21,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:21,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:21,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:21,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:21,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:21,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 63 [2022-12-14 07:24:22,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:22,872 INFO L321 Elim1Store]: treesize reduction 37, result has 38.3 percent of original size [2022-12-14 07:24:22,873 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 45 [2022-12-14 07:24:22,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:24:22,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:22,993 INFO L321 Elim1Store]: treesize reduction 48, result has 51.5 percent of original size [2022-12-14 07:24:22,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 87 [2022-12-14 07:24:26,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:26,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:26,306 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:24:26,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:24:26,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:26,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:26,364 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:24:26,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:24:26,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:26,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:24:26,418 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:24:26,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 07:24:26,438 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 18 for LOIs [2022-12-14 07:24:26,445 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-12-14 07:24:26,456 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:24:59,295 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17000#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:24:59,295 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:24:59,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:24:59,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 21] total 60 [2022-12-14 07:24:59,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587701259] [2022-12-14 07:24:59,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:24:59,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-12-14 07:24:59,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:24:59,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-12-14 07:24:59,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=588, Invalid=9512, Unknown=0, NotChecked=0, Total=10100 [2022-12-14 07:24:59,297 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand has 60 states, 56 states have (on average 2.1785714285714284) internal successors, (122), 59 states have internal predecessors, (122), 11 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (22), 7 states have call predecessors, (22), 10 states have call successors, (22) [2022-12-14 07:25:25,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:25:25,968 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2022-12-14 07:25:25,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 07:25:25,968 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 56 states have (on average 2.1785714285714284) internal successors, (122), 59 states have internal predecessors, (122), 11 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (22), 7 states have call predecessors, (22), 10 states have call successors, (22) Word has length 74 [2022-12-14 07:25:25,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:25:25,969 INFO L225 Difference]: With dead ends: 80 [2022-12-14 07:25:25,969 INFO L226 Difference]: Without dead ends: 80 [2022-12-14 07:25:25,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 147 SyntacticMatches, 8 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4648 ImplicationChecksByTransitivity, 66.1s TimeCoverageRelationStatistics Valid=1130, Invalid=14872, Unknown=0, NotChecked=0, Total=16002 [2022-12-14 07:25:25,970 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 375 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:25:25,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 300 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-14 07:25:25,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-12-14 07:25:25,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2022-12-14 07:25:25,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 60 states have (on average 1.0166666666666666) internal successors, (61), 60 states have internal predecessors, (61), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 07:25:25,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2022-12-14 07:25:25,971 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 74 [2022-12-14 07:25:25,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:25:25,971 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2022-12-14 07:25:25,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 56 states have (on average 2.1785714285714284) internal successors, (122), 59 states have internal predecessors, (122), 11 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (22), 7 states have call predecessors, (22), 10 states have call successors, (22) [2022-12-14 07:25:25,972 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2022-12-14 07:25:25,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 07:25:25,972 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:25:25,972 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:25:25,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-14 07:25:26,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-12-14 07:25:26,174 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2022-12-14 07:25:26,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:25:26,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1985382166, now seen corresponding path program 1 times [2022-12-14 07:25:26,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:25:26,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067349499] [2022-12-14 07:25:26,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:25:26,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:25:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:25:27,250 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 07:25:27,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:25:27,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067349499] [2022-12-14 07:25:27,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067349499] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:25:27,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951206245] [2022-12-14 07:25:27,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:25:27,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:25:27,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:25:27,251 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:25:27,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-14 07:25:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:25:27,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-14 07:25:27,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:25:27,405 INFO L321 Elim1Store]: treesize reduction 88, result has 24.8 percent of original size [2022-12-14 07:25:27,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 70 [2022-12-14 07:25:29,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 55 [2022-12-14 07:25:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-12-14 07:25:29,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:25:29,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951206245] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:25:29,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 07:25:29,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 20 [2022-12-14 07:25:29,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392454896] [2022-12-14 07:25:29,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:25:29,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:25:29,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:25:29,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:25:29,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-12-14 07:25:29,119 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-14 07:25:30,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:25:30,126 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2022-12-14 07:25:30,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 07:25:30,126 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 80 [2022-12-14 07:25:30,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:25:30,127 INFO L225 Difference]: With dead ends: 76 [2022-12-14 07:25:30,127 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 07:25:30,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 69 SyntacticMatches, 11 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-12-14 07:25:30,127 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:25:30,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 91 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 208 Invalid, 1 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 07:25:30,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 07:25:30,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 07:25:30,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:25:30,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 07:25:30,128 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 80 [2022-12-14 07:25:30,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:25:30,128 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 07:25:30,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-14 07:25:30,128 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 07:25:30,128 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 07:25:30,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 37 remaining) [2022-12-14 07:25:30,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 37 remaining) [2022-12-14 07:25:30,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 37 remaining) [2022-12-14 07:25:30,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 37 remaining) [2022-12-14 07:25:30,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 37 remaining) [2022-12-14 07:25:30,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 37 remaining) [2022-12-14 07:25:30,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 37 remaining) [2022-12-14 07:25:30,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 37 remaining) [2022-12-14 07:25:30,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 37 remaining) [2022-12-14 07:25:30,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 37 remaining) [2022-12-14 07:25:30,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 37 remaining) [2022-12-14 07:25:30,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 37 remaining) [2022-12-14 07:25:30,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 37 remaining) [2022-12-14 07:25:30,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 37 remaining) [2022-12-14 07:25:30,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 37 remaining) [2022-12-14 07:25:30,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 37 remaining) [2022-12-14 07:25:30,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 37 remaining) [2022-12-14 07:25:30,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 37 remaining) [2022-12-14 07:25:30,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 37 remaining) [2022-12-14 07:25:30,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 37 remaining) [2022-12-14 07:25:30,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 37 remaining) [2022-12-14 07:25:30,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 37 remaining) [2022-12-14 07:25:30,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 37 remaining) [2022-12-14 07:25:30,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 37 remaining) [2022-12-14 07:25:30,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 37 remaining) [2022-12-14 07:25:30,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 37 remaining) [2022-12-14 07:25:30,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 37 remaining) [2022-12-14 07:25:30,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 37 remaining) [2022-12-14 07:25:30,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 37 remaining) [2022-12-14 07:25:30,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 37 remaining) [2022-12-14 07:25:30,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 37 remaining) [2022-12-14 07:25:30,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 37 remaining) [2022-12-14 07:25:30,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE (4 of 37 remaining) [2022-12-14 07:25:30,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE (3 of 37 remaining) [2022-12-14 07:25:30,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE (2 of 37 remaining) [2022-12-14 07:25:30,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK (1 of 37 remaining) [2022-12-14 07:25:30,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 37 remaining) [2022-12-14 07:25:30,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-12-14 07:25:30,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-12-14 07:25:30,341 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:25:30,347 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 07:25:30,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:25:30 BoogieIcfgContainer [2022-12-14 07:25:30,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 07:25:30,354 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 07:25:30,354 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 07:25:30,355 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 07:25:30,356 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:15:18" (3/4) ... [2022-12-14 07:25:30,363 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 07:25:30,373 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-12-14 07:25:30,374 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-14 07:25:30,379 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2022-12-14 07:25:30,379 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-12-14 07:25:30,379 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-14 07:25:30,379 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 07:25:30,407 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 07:25:30,407 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 07:25:30,407 INFO L158 Benchmark]: Toolchain (without parser) took 612769.44ms. Allocated memory was 167.8MB in the beginning and 553.6MB in the end (delta: 385.9MB). Free memory was 131.4MB in the beginning and 394.6MB in the end (delta: -263.2MB). Peak memory consumption was 125.7MB. Max. memory is 16.1GB. [2022-12-14 07:25:30,407 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 107.0MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:25:30,407 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.01ms. Allocated memory is still 167.8MB. Free memory was 131.4MB in the beginning and 120.8MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 07:25:30,407 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.28ms. Allocated memory is still 167.8MB. Free memory was 120.8MB in the beginning and 118.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:25:30,407 INFO L158 Benchmark]: Boogie Preprocessor took 26.63ms. Allocated memory is still 167.8MB. Free memory was 118.9MB in the beginning and 117.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:25:30,407 INFO L158 Benchmark]: RCFGBuilder took 472.22ms. Allocated memory is still 167.8MB. Free memory was 116.7MB in the beginning and 93.7MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-14 07:25:30,407 INFO L158 Benchmark]: TraceAbstraction took 611960.83ms. Allocated memory was 167.8MB in the beginning and 553.6MB in the end (delta: 385.9MB). Free memory was 92.9MB in the beginning and 398.8MB in the end (delta: -305.9MB). Peak memory consumption was 81.6MB. Max. memory is 16.1GB. [2022-12-14 07:25:30,407 INFO L158 Benchmark]: Witness Printer took 52.89ms. Allocated memory is still 553.6MB. Free memory was 398.8MB in the beginning and 394.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 07:25:30,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 107.0MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.01ms. Allocated memory is still 167.8MB. Free memory was 131.4MB in the beginning and 120.8MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.28ms. Allocated memory is still 167.8MB. Free memory was 120.8MB in the beginning and 118.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.63ms. Allocated memory is still 167.8MB. Free memory was 118.9MB in the beginning and 117.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 472.22ms. Allocated memory is still 167.8MB. Free memory was 116.7MB in the beginning and 93.7MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 611960.83ms. Allocated memory was 167.8MB in the beginning and 553.6MB in the end (delta: 385.9MB). Free memory was 92.9MB in the beginning and 398.8MB in the end (delta: -305.9MB). Peak memory consumption was 81.6MB. Max. memory is 16.1GB. * Witness Printer took 52.89ms. Allocated memory is still 553.6MB. Free memory was 398.8MB in the beginning and 394.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 64]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 64]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 64]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 48]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 10]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 87 locations, 37 error locations. Started 1 CEGAR loops. OverallTime: 611.9s, OverallIterations: 40, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 88.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 mSolverCounterUnknown, 11749 SdHoareTripleChecker+Valid, 45.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11654 mSDsluCounter, 12813 SdHoareTripleChecker+Invalid, 43.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 135 IncrementalHoareTripleChecker+Unchecked, 10325 mSDsCounter, 2163 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18050 IncrementalHoareTripleChecker+Invalid, 20362 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2163 mSolverCounterUnsat, 2488 mSDtfsCounter, 18050 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2931 GetRequests, 1555 SyntacticMatches, 128 SemanticMatches, 1248 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 28617 ImplicationChecksByTransitivity, 327.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred in iteration=32, InterpolantAutomatonStates: 500, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 40 MinimizatonAttempts, 1882 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 212.7s InterpolantComputationTime, 2486 NumberOfCodeBlocks, 2469 NumberOfCodeBlocksAsserted, 69 NumberOfCheckSat, 2999 ConstructedInterpolants, 228 QuantifiedInterpolants, 55274 SizeOfPredicates, 344 NumberOfNonLiveVariables, 5569 ConjunctsInSsa, 840 ConjunctsInUnsatCore, 77 InterpolantComputations, 22 PerfectInterpolantSequences, 1656/2114 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 2.9s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 43, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 21, TOOLS_POST_TIME: 0.5s, TOOLS_POST_CALL_APPLICATIONS: 36, TOOLS_POST_CALL_TIME: 1.6s, TOOLS_POST_RETURN_APPLICATIONS: 24, TOOLS_POST_RETURN_TIME: 0.2s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 81, TOOLS_QUANTIFIERELIM_TIME: 2.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 104, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 45, DOMAIN_JOIN_TIME: 0.5s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 43, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 24, CALL_SUMMARIZER_CACHE_MISSES: 3, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 456, DAG_COMPRESSION_RETAINED_NODES: 118, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 37 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-14 07:25:30,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04da850b-b61e-49fa-a4fc-e5b9937792d4/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE